I thought the same thing until I dropped the transmission pan a couple weeks ago to change the fluid and found a substantial amount of actual sand inside. I assume the engine was poorly cleaned the same way.
Just received the analysis back for my third oil change on my 2023 GMC Canyon. 5,318 miles in ~11.5 months.
I live in a very hot, dusty, and dry environment but also get plenty of snow in the winter. Driving conditions are a combination of short around town trips (2-10mi) and medium trips out...
IIRC if you look up the PDS of any of their oils they are all dated May 13 2026, and all the figures are inferior to the preceding datasheet. It seems like they ended up changing to inferior base stocks due to the oil shortage in all their products.
I went to Walmart and O'Reillys to pick up...
I wish I had saved copies of the most recent datasheet before the reformulation in May. Prior to that it still had compelling figures like really low pour point and really high flash point. Now both are mediocre and the viscosity is down.
That labeling change is from before the May...
I skipped the Dexos1 Gen3 on my truck after dumping the factory fill and have been using Amsoil SS. If I got a blackwing I'd just keep on using Amsoil.
The new formula is supposed to be out this month with improved performance. Although it's unclear what that means quantitatively until they...
I don't know, I did UOA's for every change since new as my paper trail. Harder to dispute a UOA vs. a random receipt. The only confusing thing was how much silica was present, but I'm expecting it to be gone on the third OCI, which I'm waiting for the report from right now.
The motorcycle oil data sheet is dated 3/2026. That's too early in the year to have been a response to the oil shortage, which didn't really start to be realized until April or May.
10W-30 is unchanged. 10w-40 is down. The rest are up.
I'm running it long term in one of my cars, but not for the cleaning. The PDS had some really compelling figures on it before the mystery base oil swap and I just picked up several from walmart on the cheap.
Just started the first OCI last month.
@Pablo On a side note, can you comment on if Amsoil is expected to deliver this new formula without making inferior base stock substitutions like we've been seeing evidence of from other, more prominent brands?
I get the idea this level of cleaning is incompatible with the target oil change intervals for AMSOIL Signature Series. I assume if they made something like this, it would be a dedicated SKU meant for shorter cleaning intervals around 5k