Don't know if this has been asked before. I am thinking of changing all my oil's (engine,trans,front & rear differentials) to synthetic. I have about 41k miles on her now. What is the best synthetic to use? Thanks!

 

I think u'll get alot of different responses as this is more of a personal preference. I use amsoil in everything from bikes, ski-doo's, both trucks. Never had any problems since ive been using it so my vote is for amsoil.

 

If you are already think of Synthetic, you can't go wrong. I buy what is on sale. I run both Valvoline and Mobil 1 when Advance Auto had their sale. Just note that Castrol Synthetic is the cheapest sythetic of all because it's not a true sythetic. It's conventional oil refined to strict standard which is comparable to the synthetics benefits but not near as good.

 

None of the synthetics are "true" synthetics. The only ones that ever get cast into the "true" category are Redline and Amsoil, as far as American specified oil goes, European synthetics on the other hand are all true synthetics.

 

Damn man how much does that set you back.....