Which oil? Mineral vs Synthetic

threewood

FBBO Gold Member
FBBO Gold Member
Local time
11:14 AM
Joined
May 30, 2014
Messages
5,838
Reaction score
8,256
Location
Artesia, NM
I have a small stash of Valvoline VR1 10w30 that I use. Synthetic. This has a shorter time between changes as it does not have the cleaners added to it so it gets dirty faster.

My large stash is Driven HR2 10w30 conventional oil.

I use both in my 318 Poly solid lifters and my 440 solid lifters. Average clearances.
 
Last edited:

Geoff 2

Well-Known Member
Local time
1:14 PM
Joined
Jul 21, 2014
Messages
1,224
Reaction score
759
Location
Australia
Very foolish adding any thing to today's oils. Additives like STP & Zinc go back decades. Oils today are not the same. The additives that the manufacturer selects are carefully blended to work together, not against, each other for superior protection.
 
Top