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Dodge Durango 360ci Oil Pressure drop!
I apologize if this is in any way a ‘duplicate’ post, but I searched the Forum and did not find anything similar
I have a 2000 Dodge Durango SLT with the 360ci engine, auto tranny, bought new. Had all suggested maintenance performed, including oil and filter changes every 3000-5000 miles. Never ‘used’ oil (that we are aware of) and has no leaks at 168000 miles. Recently drove it approximately 800 total miles at mostly Interstate speeds. I noted Oil Pressure was fluctuating slightly. As I began stopping at the end of an off-ramp, it dropped far enough to trigger alarms, but came back up. Checked the oil level, and found the reservoir was nearly dry! (This approx. 5000 mi since last oil and filter change) Added a quart of oil, and took to nearest garage. The mechanic said it was not a good idea to flush the engine, nor add any type of additive, but to simply trade the vehicle. I don’t want to get rid of it, as it has been a great vehicle, and I had hoped to continue to drive it for a while.
Any suggestions what some logical “next steps” might include, based upon your knowledge and experiences with similar vehicles and/or similar situations?
What do you think of mechanic's suggestion not to flush engine, or add any additive?
All that has been done so far is changing oil and oil filter. Switched from Castrol 10W-40, which had been used since new, to the type of oil the mechanic said he used in all his vehicles. (Said that he did not like nor recommend Castrol products)
Thanks in advance for your help!