Roller cams are much less sensitive than a flat tappet.

Here are the specs

http://www.mobil.com/usa-english/mot...duct_guide.pdf

Jeff

If you guys want the straight scoop on the oil contact mobil 1 on their web site..........Hey Artie and Griff Happy thanksgiving
Guys!!!!



Jim

I am debating between the Mobil 1 15W-50, and the V-Twin 20W-50. So I called Mobil and asked about running the V-Twin 20W-50 in a automotive/marine engine. They strongly recommended against it. Anyone running the V-Twin oil in their boat engines? Any issues with it? Thanks.

The Mobil 1 V Twin oil has a high level of Zink (1600) ppm because an air cooled V Twin (typically a Harley) needs the added protection. Also the high zink levels are required for flat tappet lifters. The zink on the standard Mobil 1 15-50 is 1200 PPM.

All the zinc you will ever need, but you won't find this at normal retailers.

http://valvoline.com/products/consum...ng-motor-oil/9

Find your local distributor and they will sell to you direct.

Running it in mild roller cam small blocks, they see long periods of WOT (1hr+) oil pressure is higher with v twin over M115-50. Also running it in 114" hi compression Shovel head HD. Used to have 0 psi (real)hot idling in traffic with Golden Spectro 20-50 syn. Now never see less than 10 in same conditions.
based on what I've seen this stuff works.

same here....1100hp per side, excellent oil.

I wasn't sure how long it would be there when I saw it so I bought all they had on the shelf, which was only 8 jugs.

picked up a couple jugs last sat.

Ohhhhhhhhhhh Doctor! Nice

Jeff