Oil selection (10/2009)

[undy]

I've been wrestling with switching from the Rotella T to the Mobil 1 15w40 myself. I really could care less about ZDDP levels as I'm running a hydraulic roller. I just want the best lubricity possible. What has me holding back is the reported smaller molecular size of the synthetic oils. They tend to have the propensity to leak a little more. I've read it but quite frankly knowingly have never experienced it. It still gives me concern. I don't want to give my leak prone FE a reason to leak any more.

It's not just Rick that's the fanatic ... I run an Accusump accumulator system too. It's a 2 quart and it's mounted on the passenger side firewall. It is setup solely for cold-start duty as I don't track my Cobra. It's really great having 30 lbs of oil pressure coursing through the FE's veins before the ol' crank starts 'a spinnin'.

Pat, you're still spinning a dry crank against a dry journal till the system builds oil pressure. Suspended solids tend to stay behind when the oil goes away from the journal, too abrasive for me..

[zrayr]

Originally Posted by undy

I've been wrestling with switching from the Rotella T to the Mobil 1 15w40 myself. I really could care less about ZDDP levels as I'm running a hydraulic roller. I just want the best lubricity possible. What has me holding back is the reported smaller molecular size of the synthetic oils. They tend to have the propensity to leak a little more. I've read it but quite frankly knowingly have never experienced it. It still gives me concern. I don't want to give my leak prone FE a reason to leak any more..............."

if leaking is your only concern, I'd give it a try. You can always drain it if you find it not to your liking. The greatly reduced wear is what sold me on synthetic oil. I can put up with a little leaking if thats my tradeoff. But when I had an FE powered Ford, it didn't leak using Mobil 1 15-50 (and neither does my 289, even with some nasty crankcase pressures.

Z. Ray

[Tom Kirkham]

Some interesting food for thought on choosing your oil viscosity:

http://grassrootsmotorsports.com/art...lippery-slope/

[Got the Bug]

Originally Posted by Tom Kirkham

Some interesting food for thought on choosing your oil viscosity:

http://grassrootsmotorsports.com/art...lippery-slope/

Thought I'd re-post the link for Tom as I was getting a page error.

http://grassrootsmotorsports.com/art...lippery-slope/