Yamalube oil?

Hi Mark,
Don't know but Valvoline Racing 20/50 has all the goodies "ZDDP" and is avalible at most auto parts stores.

Mark

...SickCat is Right! You want 'Valvoline VR-1 20w/50 Racing Oil' It Does Have the ZDDP! In California, I found it at 'Kragens'; around $48.00 for a 12 Pack Case, Plus Tax! Yes! That IS $4.00 a Quart!...

Well written, somewhat dated, piece on the ZDDP issue -

http://tinyurl.com/so5ah

Is there a 30w oil that has zddp? Chuck

Delo 400 30W

Here's a response from Valvoline regarding an inquiry about their VR1 oil. Interesting, they claim its not the SJ rating (an API rating) that guarantees adequate ZDDP content, they claim it's lack of the GF-3 and GF-4 energy conserving ratings (EPA ratings) that indicate the oil has older standards for ZDDP content.

Quote:
"Our VR1 Racing Oil is NOT just an "ordinary new car street oil" as suggested. Our Valvoline VR1 Racing Oils can be used in street applications, but still contains the high amount of ZDDP (Zinc and Phosphorus). This information can be found on our Valvoline.com website, under the section where it lists the Racing Oils. We have also added the product information sheet for both the VR1 and the "Not Street Legal" Racing oils. As you will see, Valvoline still contains 1200 ppm Zinc content in our regular conventional VR1. It does carry the API Service "SM" rating, but this oil was not made to change for emission standards due to it not being a "ordinary street car oil." This information clearly states the amount of both the Zinc and Phosphorus levels in the oils. The main difference between the the "Not Street Legal" racing oil, or commonly known as Conventional and Synthetic Racing oils, and the VR1 is the Calcium content. Calcium levels are higher in the NSL oils, compared to the VR1, and the NSL oil is only recommended for 500 mile oil changes, while the VR1 is a 3 month/3,000 mile oil. Valvoline stands behind the flat-tappet and more aggressive type cam applications 100% with our Valvoline VR1 and NSL Racing oils. The proof is in our product information sheets, which are online for the viewing as well."

"Adding to what we stated earlier, we see a lot of references to the API Service "SM" rating, being the main cause for flat tappet camshaft damage. SM is basically just a gasoline rating. The S stands for Spark ignition, which refers to the ignition for gasoline type vehicles. When an oil has an SM rating, that just plainly means that the oil passed the specific API (American Petroleum Institute) test requirements to obtain this specification. It has nothing to do with catalytic converters. The rating that stands out on conventional motor oils, (Premium conventional, Durablend, & Synpower) is the GF-3 and GF-4 ratings. These are energy conserving ratings that are necessary because of the Environmental Protection Agency mandating federal standards to further reduce emissions, beginning with '05 vehicles. These are the ratings that make the oil safe for catalyst effectiveness, and these ratings are not found on the VR1 Racing Oils due the ZDDP additive content, not API Service "SM."

Hope this helps,

Valvoline

Costco used to sell Chevron Delo but not only carry the Delo LE which is a low emission version which no doubt has less ZDDP! Crap! it was cheap too!

Yes,

the newest diesel engines are sporting catalytic converters now, so Diesel engine motor oil (like Delos) has now been modified to make it safe for catalytic converters (among other things the zddp has been reduced).

My oldest son is a diesel mechanic, we discussed this very topic Saturday night.

A tech service bulletin by Amsoil on this topic, notice Amsoil claims the GF-4 rating is an ILSAC rating, not a US EPA rating: