ZDDP. I know this was asked previously.

WI wide body · 01-22-2008, 07:55 AM

But what is the recommended amount to add to the oil. Exactly how many ounces to the 12 quarts of oil?

Thanx.

moneymanager · 01-22-2008, 08:58 AM

It depends of course on what product you are using. EOS? STP? Take a look at the lnengineering.com site...it's all there. If I remember correctly, you need about 0.5 oz of EOS per quart of oil.

wesayso · 01-22-2008, 09:27 AM

it would depend on the oil you are using to begin with....

If you use Swepco 15W40 or BP 20w50 you don't need to add a supplement like EOS.

WI wide body · 01-22-2008, 11:28 AM

Quote:

Originally Posted by wesayso

it would depend on the oil you are using to begin with....

If you use Swepco 15W40 or BP 20w50 you don't need to add a supplement like EOS.

Adding it to an SM oil that was unfortunately used during the last oil change.

HarryD · 01-22-2008, 08:28 PM

The answer is in the Ultimate Oil Thread or Why We Hate CJ4/SM Oils.

The best advice is to change the oil again. If the current oil does not have 900-1000 ppm Zn/P, there is no point using an additive.

What oil is there now?

WI wide body · 01-23-2008, 11:42 AM

Quote:

Originally Posted by HarryD

The answer is in the Ultimate Oil Thread or Why We Hate CJ4/SM Oils.

The best advice is to change the oil again. If the current oil does not have 900-1000 ppm Zn/P, there is no point using an additive.

What oil is there now?

Castrol 20W-50W

EarlyPorsche · 01-23-2008, 12:27 PM

You do not need to change it. To an SM oil a bottle of EOS should have you at or above SL rated oil averages. Don't quote me but that is what I have read over and over so unless something recently changed that will work.

M.D. Holloway · 01-23-2008, 12:45 PM

You do not want to add any to your oil. Most engine oils have a balenced formula and by adding anything to them may throw off the balence and actually be worse then help. Send me a PM and I'll get ya some of the good stuff - the heck with all this crap from Swepco, Redline, Royal Purple and Amsoil!

dshepp806 · dshepp806's Garage

No additives,...I expect to select the oil from the get-go that has been blended/balanced, providing the Z/P 's within the package itself....my 2 cents....

And I'm damned glad to see the LubeMaster NOT include BP in the "crap" list..!!!

HarryD · 01-23-2008, 04:22 PM

Quote:

Originally Posted by LubeMaster77

You do not want to add any to your oil. Most engine oils have a balenced formula and by adding anything to them may throw off the balence and actually be worse then help. Send me a PM and I'll get ya some of the good stuff - the heck with all this crap from Swepco, Redline, Royal Purple and Amsoil!

OK, I'll bite, what's the "good stuff"?

FWIW, I would like to avoid additives as well but I do not think the folks setting the current standards have my needs in mind.

cab83_750 · 01-23-2008, 05:12 PM

sub'd!

WI wide body · 01-24-2008, 09:22 AM

Wow. Seems to be quite a bit of difference of opinion.

db_cooper · db_cooper's Garage

I use Rotella T. Dino 15-40 in the summer and Synthetic 5-40 in the winter. Good package of additives and very clean when you remove the covers and adjust the valves. No consumption issues. Try and find the old CI-4 plus or SL in the 15-40. the new "Triple Protection" may not have as much of the good add pack in it.