My son bought 144 bottles of Castrol 10w40 on closeout for $110. This was 2 or 3 years ago. We drive old iron and have been steadily using them up.
What felt like a wall in our garage now feels like a security blanket.
What felt like a wall in our garage now feels like a security blanket.
I would not play around with it on anything with VVT, but it's a pretty common "hack" for pre-2010'ish motors and probably even a good idea.