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Mobil Delvac 1 5W30 Advanced Synthetic oil is a mixed fleet oil that can be used in both diesel and gasoline engine applications. The oil carries a dual API rating that is CK-4/SP. In terms of its gasoline engine use, is the phosphorus level of the oil governed by the SP rating, meaning...

According to a Torco representative, SX-8 is on the GM Dexos1 Gen 3 approved list. However, the "Supplier" is listed as Amalie, and the oil is listed as just Torco. The Torco rep went on to say that Torco purchases some components from Amalie, and the Dexos1 Gem 3 licenses are for SX-8. I...

I, too, am interested in peoples' experience with Torco oil, especially Torco SX-8 which is their passenger street vehicle oil. Torco gets very little mention here on BITOG. Torco SX-8 now meets Dexos1 Gen 3, and it's comprised of Group III and Group III+ (GTL) base oils according to a Torco...

I understand that EM's EHC can be combined with Group III base stocks to meet Dexos1 Gen 3. However, can Walmart legally market Super Tech Full Synthetic oil as a full synthetic (Group III) if the base oil used in the formulation is a combination of EM's EHC base stocks and Group III?

Amsoil provides little, if any, evidence on their website regarding the protection quality of OE as compared to any name brand or store brand full synthetic oil that can be purchased off the shelf. It appears their marketing strategy for OE is to leverage the product based upon their "brand"...

I appreciate all the responses...thanks everyone. Yes, I have the 6.6L L8T gasoline engine in my Silverado 3500HD, and GM specs Dexos1 Gen 3 5W30 oil. As I mentioned, Pennzoil Platinum is the recommended, by Pennzoil, for the truck. I have read that Pennzoil's GTL base stock is very shear...

I checked Pennzoil's website for an oil recommendation for a Chevy Silverado 3500HD gasoline engine powered pickup truck, and Pennzoil recommended Pennzoil Platinum 5W30 which meets Dexos1 Gen 3. When I checked the Technical Data Sheet (TDS) for this oil, I noticed the viscosity is on the thin...

I contacted Pennzoil technical support today inquiring about the HTHS rating of the current Pennzoil Platinum 5W30 formulation. The Pennzoil TS representative said that the information was proprietary, and he could not disclose it. The PDS for Pennzoil Platinum 5W30 lists the KV@100 at 9.8 cSt...

Below is the PDS for Providence Automotive Full Synthetic oils:

Over the years, there has been a solid user base of TSC's Traveller All Fleet Engine 15W-40 diesel oil. It's my understanding that this oil was blended by Warren Distribution for many years, and it was deemed very good diesel oil by users here on this site. TSC then changed the oil blender to...

Since you are not running a Ford Diesel engine, you can use any API approved CK4 or CK4/SN 15W40 diesel oil. It really doesn't matter as long as the oil has all the appropriate approvals for your engine(s). I would use whatever major or house brand conventional diesel oil that is the most cost...

It's my understanding that Valvoline Premium Blue One Solution Gen2 will start hitting retail shelves once the current inventory of VPB 8600 ES has been depleted. Also, a Valvoline representative informed me that Valvoline has submitted and requested that Ford test Valvoline Premium Blue One...

I noticed that Valvoline has discontinued Premium Blue 8600 ES heavy-duty diesel oil, and they are now blending Valvoline Premium Blue One Solution Gen2 in 10W30 and 15W40. Premium Blue On Solution Gen2 is being marketed a universal mixed fleet oil for diesel, natural gas, and gasoline...

I just reviewed the PDS for Rotella T4 15W40, and I noticed that Shell now lists this HDEO as a synthetic blend. To confirm this claim, I contacted Shell and received a response stating that the formulation for Rotella T4 15W40 was upgraded to a synthetic blend in January of this year (2021)...

PDF from WD for Kirkland Signature 15W40 HDEO attached.

Kirkland 15W40 does have higher levels of zinc and phosphorus, specifically, 1270 PPM and 1150 PPM respectively according to the Warren Distribution PDS. Calcium is 1050 PPM and magnesium is 1000 PPM. The oil also contains a splash of moly 66 PPM. Overall, Kirkland 15W40 has a decent additive...

Kirkland Signature Heavy Duty Diesel 15W-40 is blended by Warren Distribution (WD) which is the same oil marketer that makes Walmart's Super Tech brand. Warren Distribution blends Mag 1 oil which is their own house brand. WD also blends motor oils for major retail chain stores like Meijer in the...

Castrol article comparing HDDO to NG oil: https://www.castrol.com/en_us/unite...gas-engine-oils-whats-the-difference.htm From the article: "Adding natural gas engine oil to a diesel engine can lead to increased wear in the valve train, rings / liners, and other high-contact areas in the engine...

In further comparing the VOAs for Castrol GTX Diesel posted by HDoilDude and the PQIA, the one posted by HDoilDude contains both calcium and magnesium detergents in equal proportions: 985 PPM and 961 PPM respectively, and there is dose of moly (57 PPM). The VOA posted by the PQIA for Castrol GTX...

There is one notable difference between the VOA HDoilDude posted and the VOA listed on the PQIA: notice the sample of Castrol GTX Diesel tested by the PQIA contains virtually no Molybdenum. The VOAs for all the other HDDOs samples posted on the PQIA contain moly and/or boron. I understand there...