use rp but think I'm going to use amsoil instead

 

Amsoil 5w30 for me.

 

I run castrol gtx 10w30 in both my rides

 

Castrol Syntec blend 10-40 for a long time... Switched to Syntec 10-30 last oil change with the addition of the turbo and have seen way less oil pressure and a way more noisy motor... Going back to the 40 next oil change

I run Castrol in everything I own. And will in my next motor as well...

 

Castrol 5w30

 

Royal Purple 5w30

 

olive

 

synthetic blend?

 

Mobil 1 in the my Tahoe and Jeep.
The Jeep takes 0w-40 which is odd to me.

 

Royal Purple 5W-30. Royal purple all around except for brake fluid.