Oil Additives

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Apr 20, 2010 | 09:20 AM

70vetteinpieces

Thread Starter

Melting Slicks

Joined: Jan 2003

Posts: 2,545

Likes: 77

From: Toronto ohio

Oil Additives

Trying hard to put back the 70 vette together. Didn't expect the cam to get wiped on the rebuilt engine. Replaced the cam with a Lunati and followed their break in procedure exactly.

Also have been following the posts on flat tappet oils. I bought some ZDDP plus to add to the oil after break in. Found some Accel oil at Walmart that states for older cars and meets SF requirements. Nothing on Zinc contents and could not find anthing on the web except is was manufactured by Warren Distributing.

If the oil has the required Zinc does adding ZDDP plus create a problem - too much Zinc?

More concerned about doing damage then wasting $ on additives.

really want to drive around this year instead of staring at Vette pieces in the garage

Apr 20, 2010 | 10:23 AM

tomgallucci57

Racer

Joined: Oct 2009

Posts: 280

Likes: 1

From: cleveland Ohio

i got my 68 a few months ago,came to me with engine freshly rebuilt and the break in oil still in it,so i called around to local engine rebuilders and finally found brad penn grade one high performance green oil, at about 5.oo a quart,put it in a few weeks ago,and everything is good. i wanted to stay with conventional oil,and this is as close as i could get. ive heard mixing additives can be a questionable thing,but who knows,good luck,tom

Apr 20, 2010 | 10:29 AM

billla

Le Mans Master

Joined: Jun 2004

Posts: 6,231

Likes: 65

From: Seattle WA

St. Jude Donor '14

Too much ZDDP can leave combustion chamber deposits - any oil with 1200+ ZDDP is good to go per the sticky.

I would read information on the sticky regarding Brad Penn; good claims, but some inconsistent test results. Good research happening and all being posted on the sticky.

ZDDP is a pressure lubricant and really only affects the cam/lifter interface; high ZDDP here during break-in is critical.

Last edited by billla; Apr 20, 2010 at 04:13 PM.

Apr 20, 2010 | 11:37 AM

glackore

Pro

Joined: Dec 2006

Posts: 695

Likes: 5

From: tx

Billla is right - too much ZDDP is a bad thing.

I would suggest using an oil that states it has a sufficient quantity of ZDDP (usually racing oils state such, example Valvoline Racing) or add ZDDP to a current motor oil.

Don't over-additize, you don't want to create problems that would typically not be there.

Apr 20, 2010 | 12:16 PM

TWINRAY

Melting Slicks

Joined: Aug 2005

Posts: 2,683

Likes: 34

From: Working on the car NY

I'm going roller in the '69 not to put up with any of this

krap.

Apr 20, 2010 | 12:28 PM

jordan89

Safety Car

Joined: Mar 2009

Posts: 3,558

Likes: 4

From: Oakland California

I've been running Royal Purple on my '78 Z28 with the stock flat tappet cam for two years without any problems.

Apr 20, 2010 | 12:31 PM

...Roger...

Race Director

Joined: May 2006

Posts: 16,528

Likes: 53

From: Dayton, Ohio

Speaking of additives whatever happened to teflon like was in Slick 50 ? I used Slick 50 once and experienced what I thought was a small miracle.

Apr 20, 2010 | 02:03 PM

MotorHead

Race Director

Joined: Apr 2000

Posts: 17,676

Likes: 201

From: Who says "Nothing is impossible" ? I've been doing nothing for years.

For engine break in it is actually a good idea not to go too high on the ZDDP as the new components have to wear into each other. This is the reason Brad Penn's break in oil contains less ZDDP than their other high performance oils