The following link to a forum has oil analysis tests for many oils and shows the content of zinc, phosphorous, moly, etc.:

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=11;t=000310

HTH

i wish it showed kendall GT1 last time i talked them Crower recomended GT1 exclusively in any hi po motors. they said the zinc content was very important.

Interesting. What is the significance of Molybdenum? I noticed some have none and some have a lot. What's a good number for zinc? I run Castrol Syntech and it's not the lowest by any means but is quite a bit below some of the higher ones like Rotella T

Andy

Interesting. What is the significance of Molybdenum? I noticed some have none and some have a lot. What's a good number for zinc? I run Castrol Syntech and it's not the lowest by any means but is quite a bit below some of the higher ones like Rotella T

Andy


Go here for more info on moly:

http://www.bobistheoilguy.com/moly.html

I'm not up on all this....Whats good and whats bad ? :clonk:

i wish it showed kendall GT1 last time i talked them Crower recomended GT1 exclusively in any hi po motors. they said the zinc content was very important.

Here are a few VOAs for Kendall

http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=11;t=000251

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=11;t=000123#000000

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=11;t=000122#000000

I'm not up on all this....Whats good and whats bad ? :clonk:


For flat tappet cams you need zinc and moly as high pressure addatives, newer spec oils have remove most of the zinc and moly becauce they can damage catalatic converters. So unless you run a race oil , diesel oil or some extended run oils you may have trouble flattening lobes on flat tappet cams. If you are running a roller you shouldn't have problems. Comp Cams recently started recommending Rotella oil for all flat tappet cams.

looks like Mobil 1 has a good bit less than the Royal Purple, guess it might be worth the extra .25 a quart after all

Mobil was "re-formulated" not too long ago and with that the zinc was reduced. As mentioned above flat tappet engines need zinc, I think this is why you hear about so many cam failures. Valvoline "Racing" oil in the gray bottle has higher zinc content as well.

hhmmm....never ran rotella before.

Valvoline synpower wins hands down. moly=2324, zinc=1740

From the tests:
Royal Purple Racing has the most zinc at .19%
A can of STP has .19%
Mobil Delvac has .12% and moly
Chevron Delo has .12% and .02% moly
Shell Rotella has .12% but no moly
Redline has the most moly at .06%
Valvoline Racing test results show .11% zinc and no moly, but Valvoline claims they put in .13% to .14% zinc.

Valvoline Synpower is an Oil Treatment

I put two bottles of Wynn's Extend in my mech roller 439, along with 15-40 Case IH diesel #1 motor oil. I don't think I am going to do anything but change the filter. The oil only has 20 miles on it, but I'll put a good Wix in 'er.
I do believe I am going to be purchasing Rotella in 5 gallon pails for my hotrod engines.

Im a little confused about this, theres a Valvoline Synpower Oil Treatment,
http://www.valvoline.com/pages/products/product_detail.asp?product=21

and a Valvoline Synpower Synthetic Moter oil, http://www.valvoline.com/pages/products/product_detail.asp?product=19

Which are they posting numbers on in this Oil analysis, the moter Oil, or the Oil Treatment? Tried to look at the site again but it says its down for 4 hours...

I think the one with all the zinc in it is the syn power oil treatment, I don't know about anywhere else but I can't find it around here, I've checked at all of the autoparts stores and no one can even order it. On the Valvoline oil you need to make sure you get the oil that specifically says not for highway use or offroad use only. I talked to valvoline rep at the NHRA national here a couple weeks ago and he said that is the oil that still has all the zinc and moly in it.

If you read some of the posts, a few messages down they confirm it was the Oil Treatment that was tested (abbreviated VSOT on their board).

Quaker State Q Racing and Pennzoil Racing both supposedly have .20% zinc.

What about Schaeffers oil?

Schaeffers test results are in there.

I have shaeffers oil and the moly contant was 125 i believe and the zinc was in the 900's. I run a mechanical cam now is that enough moly and zinc? What would be considered enough zinc and moly?

thanks,

Pennzoil 15-40 long life has good amount of Zinc. Just made the switch to that from Castrol GTX 10-30

=
Actually Zinc & Phosphorus only work as a "team"
It is the Phosphorus, not the Moly that has been mandated for reduction & or removal from any "gasoline engine oil"
Moly has nothing to do with these two additives.
They work in conjunction with each other & form a "barrier" during metal to metal contact which is going to happen under some conditions.
It is also a corrosion inhibiter.
One is essentially useless without the other & the combination is called ZDTP or ZDDP which stand for a bunch of big fancy words I can't remember :D
But in essence they are the zinc & phosphorus mix.

Here are a few sites to check out:

http://www.bobistheoilguy.com/moly.html

http://engineering.ripi.ir/Project/major/zddp.htm

http://www.chevron.com/products/oronite/reference_materials/dictionary_of_lubricant_terms/li_dictionary_xyz.asp

Rotella will only have the zinc for a few more years then even the truck engines will be running cats. I personally don't like additives because it throws off the chemical balance of everything that the oil companies have spend a lot of money getting right. I called my engine builder and he also recommended Rotella. It's pretty cheap at Walmart so I think I will stock up on the stuff till the dust settles on what's good/bad. Right now its also on sale at Adavnce auto. $7 something for 1 gallon. Its not like it will go bad.
side note: I was on one leg of the Hot Rod power tour, was a good thing for us old muscle car guys.

I e-mailed Valvoline about this and got this reply...


The consensus in the industry is that the current chemical limits of the
GF-4/SM category are still sufficient to protect all "street" engines,
including older flat tappet foller engines. The engine tests required for
a GF-4/SM product is just as severe as the older, higher ZDDP allowed
category. For the special applications (aggressive cams, high HP racing
motors, etc) where the customer needs more ZDDP protection, our NON-GF-4
products still contain the higher levels (such as VR-1 and "not street
legal" racing).

Anyone know what happened to the chart in the link? :confused: