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Synthetic motor oil

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  • ruking1ruking1 Member Posts: 19,826
    #103
    Some of the browser keywords I used were; oil, oils, lubricants, synthetics, viscosity.
  • mattchalmersmattchalmers Member Posts: 159
    I am about to buy a case of Amsoil and would like some input on the best weight to get. I have a 98 Cadillac Catera with a V-6. I live in Texas so cold is not an issue but heat is. I have about a 50/50 mix of city and highway driving.
  • lotusmanlotusman Member Posts: 6
    See my comments about oils and additives in the additives section of this forum.
  • div2div2 Member Posts: 2,580
    Use the grade recommended in your owners manual(probably 5W-30). Don't second-guess the carmaker; they have good reasons for selecting the recommended grade.
  • garywsgaryws Member Posts: 3
    Various postings have questioned the cost and wisdom of using synthetic oil and long oil change intervals.
    I have uses Mobil 1 in a 93 Taurus since new. It now has 212,000 miles on it - uses about 1/2 quart of oil between changes. I change oil and filter every 6000 miles. I estimate that it has cost me an extra $500 over the life of the engine so far. That is a lot less expensive than an engine overhaul or a new engine. The best oil you can buy is a a low cost solution to longer engine life.
  • kdominczakkdominczak Member Posts: 174
    My mother has 93 Ford Festiva 1.3 liter four cylinder, automatic.
    Car is doing fine, she is driving 90% in the city.
    Engine is on for 20 minutes and off for an hour ,than again on and off, the worst kinda driving for the engine.She is also using her A/C a lot what puts even more presure on her already small 1.3 l. engine.
    QUESTIONS ARE:
    -WOULD YOU CHANGE TO SYNTHETIC WHEN THE ENGINE MAY BE PAST IT'S PRIME?
    -IF YES ,HOW MANY QUARTS OF OIL 1.3 LITER ENGINE NEEDS?
  • kdominczakkdominczak Member Posts: 174
    Forgot to say ,her car got 45000 miles on it.
  • vac23vac23 Member Posts: 118
    At 45k miles it would still be a good time to switch over to syn. As far as how much oil the engine take-probably no more then 4qts. the owners manuel should stated the capacity
  • kdominczakkdominczak Member Posts: 174
    What brand of oil would you recommend for small car like Festiva 1.3 l?
  • vac23vac23 Member Posts: 118
    I use Mobil 1 syn. on my '99 Galant & usually change it every 5months/5k miles. I've used it on my '90 Eclipse GSX & never had any engine problems when it was traded in at 90k. If you're going to stick with conventional, Mobil is a good choice also.
  • projectzx3projectzx3 Member Posts: 256
    ok i am sure this has been asked alot but i was lazy and didn't want to scroll through all the responses here... so i am sorry if this question is redundant. How many miles should i wait until switching over to synthetic oil. i have heard use conventional oil to 5000 miles and then switch. i plan on using Red Line as a friend of a friend is a distributor. OK to switch at 5000 miles or do i need more break-in time? thanks
  • vac23vac23 Member Posts: 118
    switching to syn at 5k miles should be fine. I usually switch at 500-1kmiles mark
  • csp137csp137 Member Posts: 1
    Every one I know swears by synthetics. One friend of mine is pushing 400,000 on his 86 Honda Civic SI. Another had 240,000 towing miles on his Astro van before he sold it to his friend who'e still driving it. I only have 200,000 on my two cars and the motors are perfect. We use it in our race car. We waited until we had run two full seasons before tearing the motor down and the bearings were perfect. No signs of wear. We could have put them back in.

    I prefer Amsoil or Redline (Amsoil's cheaper). Both are fully synthetic. I'm no Chemichal Engineer, but from what I understand from my brother who is: Organic oils have carbon chains of varying lengths which break down over time. Regular synthetic oils (like Mobile One) take organic oil and process it. Amsoil and Redline start out as synthetic.

    Besides, synthetics have much less coefficient of friction. This means more power and a slightly faster car!
  • edwardh1edwardh1 Member Posts: 88
    Is there any advantage in using a blend vs regular oil?
  • tboner1965tboner1965 Member Posts: 647
    Cost is probably the #1 advantage. However, you have no indication what the percentage of standard oil vs the percentage of synthetic is.

    So if the cost of synthetic is prohibitive, then perhaps you should consider "rolling your own" by blending in whatever percentage suits your needs.

    Cheers,

    TB
  • tonewheeltonewheel Member Posts: 47
    Ok, for the fourth time, I'm posting the following. (Already posted twice on the other topic: Engine Oil - A Slippery Subject). Last year, I contacted Mobil's engineering group directly for their response to a break-in period of conventional oil. Here is their response:
    - - - - - - - -

    Dear Mr. xxxxx,

    You can start using Mobil 1 in new vehicles at any
    time. In fact, Mobil 1 is the factory fill in
    Corvette LS1, LT-1 and LT-5 engines. And Mobil and Porsche just announced a new partnership that will also have all Porsche cars manufactured
    at the Zuffenhausen plant lubricated with Mobil 1.
    One of the myths that persists about Mobil 1 is
    that new engines require a break-in period with
    conventional oil. Current engine manufacturing technology does not require this break-in period. As the decisions by the engineers who design the Corvette and Porsche engines indicate, Mobil 1 can be used in an engine from the day you drive the car off the show room floor.

    The “30” designation identifies that all three
    grades (0W-30, 5W-30 and 10W-30) will exhibit the
    same oil viscosity at normal engine operating
    temperatures. The “W” designation identifies the
    low temperature viscosity. A smaller number
    indicates an ability to flow at lower temperatures. In summary, Mobil 1 0W-30 will
    provide the correct viscosity protection at normal
    engine operating temperatures, and BETTER
    protection at low temperature extremes for any
    vehicle that calls for a 5W-30 or 10W-30 engine
    oil.

    If you have any additional questions, you may
    contact us at our E-mail address:
    lubes@ffx.mobil.com or by phone at 1-800-ASKMOBIL.
  • oilcan2oilcan2 Member Posts: 120
    am new to this site,have been an amsoil user/dealer for 20 yrs.I currently use the 0w30
    oil in my vehicles,but I also use the amsoil air
    and oil and the oil bypass filters.the air filter
    traps more dirt than paper.I have researched the
    oil filter and it traps from about 1 to 5 microns
    the bypass goes down to one micron,and also adds
    from one to three quarts extra oil which can help
    on smaller engines.I've looked at the major
    filter boxes and none ever have any micron rating
    I think it is somewhere around ten.filtration is
    the reason these oils can go 25k or one year.
    p.s.(I'm not trying to sell amsoil here,just
    trying to share knowledge.)
  • edwardh1edwardh1 Member Posts: 88
    Is there a published report from a third party about Amsoil oil, ie data from someone other than the company?
    I do not think consumer report included them in the big oil test last year??
    I have never seen any.
  • oilcan2oilcan2 Member Posts: 120
    consumer report left them out like they left out
    little giant ladder co.they have plenty of
    testimonials about every one of their products,
    I recently took the valve cover off my plymoth
    neon with 82k,i could not get a smudge off the
    inside cover,all components you could see did
    not have any baked on oil at all,I have been
    using 0w30 since 5k.I had a ford diesel F250
    work truck that would go 20K per oil change,this
    was determined by oil samples.
  • edwardh1edwardh1 Member Posts: 88
    Still need a third party test - someone not involved.
  • jescopjescop Member Posts: 33
    to synthetics, I have been told you can never go back to conventional oil. The reason for this, I am told, is because of the additives in synthetics. These additives swell you seals and when you switch back to convential oil the will shrink and cause leaks. I can't find any written information on this and I'm wondering if anyone else has heard this.
    I don't know why I would want to switch back but it would be nice to know if I am making a permanent decision when switching to synthetics.

    Jeff
  • ccotenjccotenj Member Posts: 610
    old wife's tale there... it's simply not true...

    -Chris

    ps i use synthetics exclusively, except on my elderly caddy, because it WOULD leak, but that is because as gaskets age, they create pockets, and the synthetic will seep through old gaskets... the story you relate above is poppycock...
  • sydney6sydney6 Member Posts: 64
    I am thinking about changing my '95 F150 (302CID V8, manual trans) to synthetic oil. It has 70K miles, and runs perfect. I am the original owner and have always had the oil changed regularly.

    Will this cause any problems?

    Thanks
  • bigal1bigal1 Member Posts: 7
    Sydney6,
    I changed over to Synthetics in my 1994 Jeep Cherokee when it had about 60,000 miles. I have to be honest and say it has been great. We had a lot of Ice and Snow this past winter and with the Synthetic Oil, I didn't experience the usual Engine Knocking after having my Jeep sitting out in the freezing weather. Now that were in late Spring and have experienced some temps in the High 90's, I've noticed the engine temp has been cooler as well. I've used Dino for years but I'm now sold on the Synthetics. I also have extended my change over mileage to 5000 versus the 3000 I use to do with the Dino Oil.
    As with everything you read in these Posts, only your own personal Experience will decide if it is worth the switch to you. Good Luck!
    BigAl1
  • oilcan2oilcan2 Member Posts: 120
    I have a 302 with 235,000,I switched to Amsoil
    at 115,000,it runs fine.
  • sydney6sydney6 Member Posts: 64
    Thanks for your replies. I read in some earlier posts about seal swell, etc., that suggested maybe this could lead to problems. Sounds like that is not true.

    I will probably make the switch.
  • bcollisonbcollison Member Posts: 24
    they sell Amalie not Amsoil at that site. Is it the same product?
  • wytelightninwytelightnin Member Posts: 1
    I have a 1989 Ford Probe GT Turbo with 206,000 miles on it. I have used synthetic oil from day one. The only three brands I have ever used are Castrol, Mobile, or Valvoline. The engine in this car runs PERFECT, and the turbo-charger is still the original, and still very strong. I would highly recommend using synthetic to anyone.

    That's my two cents.
  • nosirrahgnosirrahg Member Posts: 872
    How often do you typically change your oil in the Probe, and what type of filter do you use? Have you had any problems with the turbo (I know turbos are often the source of problems due to the intense heat they expose the oil to)?
  • armtdmarmtdm Member Posts: 2,057
    You may wish to be leary of Castrol. Mobil went ot court over the use of the word synthetic as their SYNTEC I believe is a highly refined dino product. The court ruled in favor of Castrol noting that Synthetic could mean not within the normal manufacturing process. As such, I do not believe Castrol is a true synthetic oil
  • spectre3spectre3 Member Posts: 67
    thanks for confirming what i have read about castrol syntec here and other website ng's.
    i have used castol syntec for many years, but have already switched to mobil 1 in one vehicle, and will switch over to mobile 1 in my other car this month. it will be much cheaper, since walmart/kmart throws this oli on sale once in a while. has anyone heard anything positive or negative about pennzoil performax synthetic oil?

    see ya,

    lee
  • kmh3kmh3 Member Posts: 35
    Ok, Here's one for this group:

    I switched to M1 at about 1k miles on my two new cars (Mazda MPV wi 5w-30 and Mazda Protege wi 10w-30.

    The protege engine seems to run quieter, but the MPV has increased engine noise. My dad also reported increased engine noise in his Galant.

    Sorry, I wouldn't know a valve rattle from a whatchamacallit, but increased rattle might characterize the sound best.

    kmh3
  • echonomistechonomist Member Posts: 6
    My friend sitting here wonders if her new bmw should have the oil changed sooner than the remarkable 15k mile first oil change that bmw calls for. We both drive short distances to work and put few miles on our cars under the worst city driving conditions; stop and go, low speed driving and breaking. Any bmw drivers have opinions on this??? thanks says deej...
  • div2div2 Member Posts: 2,580
    As a long time Bimmer owner, the extended change interval doesn't really bother me. Change it at @7,500 if it makes you feel better, but I doubt that you will see any increase in engine longevity.
  • inkyinky Member Posts: 370
    After many years of tinkering, I have decided that the 3,000 interval is pure oil company hype. US ecomony is based on consumption. I know deep down that the 25k Syn oils like Amsoil are the real way to go. Think how much waste oil is avoided. Even, the 7,500 mile change interval with dino oil is probably OK. Testimonials are fine, but why is real comparision data not available. Surely someone besides consumers reports has tested identical engines under various trials with various oils. Now at 100,000 miles I would need to see a noticable difference in order to buy off on 33 oil changes for dino juice (actually mostly plant remains).
    INKY
  • syjetsyjet Member Posts: 6
    Are all synthetic motor oils the same? I used to
    use Mobil 1 but it is now 4.25 per quart and my
    1988 T-bird burns about 2 quarts between oil
    changes. I change oil and filter about 3-4K miles.
    I switch to a full synthetic oil made by Proline
    which I purchase at Pep Boys for 2.99 a quart. The
    car to me runs the same but who knows what is
    going on in my engine. I have 173000 miles and it
    still runs strong, so if says it is a full
    synthetic motor oil how different can it be from
    Mobil 1?

    Jim
  • techtech Member Posts: 34
    no not all synthetic oil is the same. there appears to be a great disparity in quality of base stock and additive packages used. it is like anything else you get what you pay for. I have used the premium synthetics amsoil, red line, royal purple and have settled on red line primarily because they use the polyesters base which is what is used in jet engines because it can withstand extreme heat. bottom line though is any syn oil will be better in the long run than any dino oil.
  • strooperstrooper Member Posts: 5
    Where is the best source to purchase REDLINE OIL products? I'm interested in the auto tranny fluid and also the water wetter. I'd like to buy both products at the same place to minimize shipping costs.

    Trooper
  • css3css3 Member Posts: 6
    As for the issue of synthetics perhaps being hypothetically better, but petroleum being "good
    enough", I agree that many of us will not use our vehicles long enough to see the advantage
    due to increased longevity. But if you take this approach you're still conveniently ignoring
    for me the main issue: the "safety net" factor using synthetic

    Let's take a specific.
    In cold weather, the oil will be cold with increased viscosity. This can cause delayed oil circulation or abnormally low oil pressure for some time after engine start-up. This in turn can result in trouble in the system."

    On large earthmoving equipment they then provide a table that states the tractor should be warmed up approximately 5 minutes if the temp is above 14F, 5 to 10 min between 5F and 14F, 10 to 20 minutes between -4F and 5F, and more than 20 minutes below -4F.

    Now, if we use Shell's standard petroleum hydraulic 30-weight oil for comparison, it has a pour point of 25F, the premium anti-wear variety -10F,
    while Amsoil synthetic of the same viscosity has a pour point of -47F. I won't insult your
    intelligence by drawing any conclusions for you on this one. Regarding the importance of
    cold-weather oil flow, Womack's "Fluid Power in Plant and Field", second edition, (all of
    Womack's hydraulic books are great, BTW) says on page 109 "If the the hydraulic system is
    exposed to extremely low overnight temperatures, the oil may become so thick that when
    the pump is started in the morning it may be damaged by cavitation." And remember that
    the -10F is the pour point of premium petroleum hydraulic oil, not the temperature at which it
    will flow well enough to lubricate properly, etc. And the same safety factors exist on the high
    temperature side of the range, they're just less likely to become involved in day to day
    usage.

    As for the question about 15W40 engine oil not meeting the manual specs of using 10W30
    oil, you're absolutely right, in general. But you still have to look at the numbers behind the
    ratings. The synthetic oil rated at 15W40 will far exceed the petroleum oil's characteristics at
    either end of the rating and at either end of the temperature scale. Does that matter? You
    make the call. It may not to you, but it does to me.

    One more example: I've run VW diesel cars for the past 15 years (and Cummins-powered
    trucks for the last 6) and I drive about 55,000 miles a year. Ask 10 mechanics who have any
    experience with them what they think of them and about 3 of them will tell you they're lousy,
    4 of them will say they're ok, and 3 will say they're great. But all of them will tell you that if you let one get hot, it's history. The heads warp. It's a weak spot in that engine. Well, I had
    a hose blow right up by the temp sending unit while I was running 70mph down the Interstate
    a few years ago. The temp guage never climbed, it actually went down, because all the water
    blew out almost instantly. I got it so hot that it just shut off. The head was glowing a dull red.
    All the grease and oil on the engine turned brittle and fell off. The engine had 197,000 miles on it at the time. The oil had been in the engine for a little over 45,000 miles, about 9 months. After it cooled off, I replaced the hose, filled the radiator, cranked on it for about 10
    seconds, and it fired up and took off. Ran a little rough for a few minutes, but that was all.
    My dad's driving it now -- it's got 309,000 miles on it and still gets 45-50 mpg. And the only
    engine work it's ever had is changing timing belts. Nobody will ever tell me that it would have
    made it if it had petroleum in it. Petroleum would have been flammable paste by then.

    Please note here that I'm not trying to tell all of you that you should switch. It really doesn't
    matter to me. I've got my reasons to use synthetic oils. Will it matter? I hope not. It's like an insurance policy: You place your bet and hope you lose. Ok, end of diatribe.
  • rs_pettyrs_petty Member Posts: 423
    redlineoil.com is the website. They have a dealer list or you can contact them direct.
  • armtdmarmtdm Member Posts: 2,057
    I have used waterwetter a few times and seen no noticeable results but who knows. Amsoil also makes a synthetic trans fluid that I have used for years. redLine is good but seems to be overpriced due to small dealer network and sales. Prefer Mobil 1 and Amsoil.
  • pks1pks1 Member Posts: 32
    Could someone explain the diffrences between oil types like 10W30... And how is the new Valvoilne MAX life for car over 75k . How is it?
  • armtdmarmtdm Member Posts: 2,057
    10W30 The 10 refers to viscocity when cold, the lower the # the easier the flow. The 30 refers to the weight when hot for protection. 5W30 supposedly easier starting when cold then a 10W30.
    (I find no diff and feel the 5W30s do not protect as well) If cold starting in cold weather an issue use synthetic, flows down to minus 60 degrees F. Petroleum becomes honey at around minus 10F. Synthetics simply protects better at all times. Almost no cars today use a 10W40, mostly 0W30-10W30.
  • div2div2 Member Posts: 2,580
    The most important thing about oil viscosity and grade is to use what is recommended by the manufacturer. As for Valvoline MaxLife, I wouldn't go as far as to say that it's a marketing gimmick, but I doubt it's additional additive packages make it significantly better than any other brand name non-synthetic oil.
  • pcleveland2pcleveland2 Member Posts: 516
    Saw a post by "bcollison" a while back asking about Amalie Motor Oil. No, its not a synthetic oil. It was Kendall's premium line. I don't know who makes it now as the Kendell name and blend formula was sold to Sunico. The Kendall plant and speciallity lines were sold to American Refining Group. They market under the Brad-Penn name. Hope I got that all right, gets confusing when the Big Boys do something like that. Don't know who got the Amalie Name. It was a good product when it was Kendall and Kendall was Kendall. But it's a Dino oil. Was a Pennsylvinna crude base I think. Not to much of that left. Although there are a lot of Pennsylvinna wells still pumping.
  • 5spd5spd Member Posts: 38
    Has anybody ever use the Exxon full synthetic oil ? Since Exxon is now one company with Mobil, does that mean the synthetic oil products both of them provide are more or less the same stuff ?
  • vac23vac23 Member Posts: 118
    Don't know if they're exactly the same. I would imagine both would be different in some shape or form. I personally would stick to my M1 unless I know for sure both are the same then I'll just buy based on price
  • spokanespokane Member Posts: 514
    5spd, I spoke briefly with an ExxonMobil lubrication engineer a few months ago and got the impression that they were continuing with both the Exxon and Mobil brands in a manner such that we should assume the products are a bit different. My questions were not related to the synthetic motor oils, however. The ExxonMobil web site should lead to a source that can provide a more specific answer to your question.
  • armtdmarmtdm Member Posts: 2,057
    I recently purchased some Exxon full synthetic for lawn mower use, yep, use the cheapest synthetic I can find for the mower, and this time it was Exxon at $2.99/quart. Mobil 1, Castrol, others around $4.00. For my cars, Amsoil only and if it were not available it would be Mobil 1. All others are wannabees. Mower is ten years out, going strong on two oil changes a year, (early spring and late summer) .
  • md2002md2002 Member Posts: 142
    oil changes with synthetic oil. Is the norm about 6-7k between changes. I drive about 17k a year mostly highway, say about 70/30 highway vs city driving.

    Just curios as my next oil change is coming up and I wanted to move on over to synthetic.
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