Zinc issue and oil

carguy · **Posted:** Sat Nov 07, 2009 1:08 pm

Curious what folks are running in their machines given the reduced zinc in motor oil. Ralph, ever since you mentioned this at the Mopar Nats I've been looking into it more. My cars are street cars (flogged regularly :-D

) and all but two have flat tappets. I have been leaning towards Valvoline VR1, but it does not have detergents. The ZDDP Plus additive looks interesting as well, and cheaper ultimately.

Thoughts/ Suggestions?

fata12 · **Joined:** Tue Jul 29, 2008 9:09 pm **Posts:** 39

The only oil I have run for three seasons
hyd. flat tappet cam is brad Penn race oil..
Absolutely no problems.. I don't use any additives
either..

Bill C · **Posted:** Sat Nov 07, 2009 10:59 pm

I had been using Shell Rotella 15W 40 in my older MOPARS for years but the zinc rating has been reduced and Rotella has gone from SL rated to SM rated. Tractor Supply Companies house brand motor oil is still SL rated and therefore has a higher level of zinc, as I understand the ratings based on some threads over on MOPARTS.COM.

I also read somewhere else the some of the motorcycle oils have even higher levels of zinc and other additives that have been removed from modern oils for emmisions reasons.

hemi4speed · **Joined:** Sun Sep 20, 2009 9:12 pm **Posts:** 29

I use Central Petroleum Company (cen pec co) My machinest claims it has one of the highest Zinc ratings. I get it a local Tractor supplier. heres the Site.

http://www.cen-pe-co.com/

carguy · **Posted:** Sun Nov 08, 2009 8:10 pm

Thanks guys. I had been looking at the Brad Penn stuff and had also read about "farm oils".

Not sure what I'll do. Leaning towards the ZDDF Plus...

RalphsRapidTransit · **Posted:** Thu Nov 12, 2009 9:04 pm

I did some research, Brad Penn & Valvonline Racing Oil have enough Zinc for our Muclecar Motors. You can be purchased Valvoline at NAPA or any leading autoparts store. http://www.jegs.com/i/Valvoline+Racing/ ... 1/10002/-1 If anyone is interested in Brad Penn Oil we have it available to us for $55.00 a case.

CJK440 · **Posted:** Thu Nov 12, 2009 9:28 pm

Just need lifters with those little wheels......

carguy · **Posted:** Mon Nov 16, 2009 2:55 pm

Chris,
Yep, that would help solve the top end. I know much of the discussion relative to this issue centers around wiped out cams but I have got to believe there is an equal amount of exposure to the bottom end of the motor, ie., rod bearings, etc.

What's your take?

I'm about to hit up Ralph about the case of Brad Penn.

Zinc issue and oil

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