Quote:
Originally Posted by Carl_G
I agree. I think playing around with stuff that isn't recommended in the owner's manual is "farting around" and asking for trouble.
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I've gone back and forth between synthetic and conventional oils and using whatever is on clearance. I've also mixed conventional with synthetic to make my own blends during the life of my 97 T4R SR5.
I've even mixed synthetic 0w20 with conventional 15w40 with good results.
Still runs fine and has not blown up or been disabled.