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Toyota Engine Sludge Problem
Does anyone using 100% synthetic (not blend) motor oil and changed their oil at above stated interval also experiencing engine sludge problem?
I have a 2001 Sienna and I had my first oil change at 2K. I replaced with Mobil 1 oil & filter. I changed the oil 6 month later using Amsoil oil & filter. I have no problem. I changed from Mobil 1 to Amsoil because Mobil recently changed their formula in their production of Mobil 1.
Maybe using 100% synthetic motor oil might avoid sludge problem because synthetic oil can absorb a higher tempeture so the oil would not breakdown so easily. Any comments welcome and will definitely help all Sienna owners.