Jun 2, 2010 #1 J john Active member Joined Sep 3, 2007 Messages 3,725 Reaction score 0 Points 36 Age 65 I have a 2001 Toyota Sequoia with 149,000 miles on it. I always put regular oil in it but recently I put synthetic oil in it. My mechanic told me synthetic oil is not good for high mileage vehicles. Is that true? Is synthetic oil OK?
I have a 2001 Toyota Sequoia with 149,000 miles on it. I always put regular oil in it but recently I put synthetic oil in it. My mechanic told me synthetic oil is not good for high mileage vehicles. Is that true? Is synthetic oil OK?