[EDFHOBBIES]

The deposits also depend on what your pouring into the motor as far as oil... No Joke. Euro grade standards ACEA vs API are a lot higher. Their oils are full of Additives that are bad azz for wear and generates a high TBN of 12 plus which is great (this leads to ultimate protection and long oil intervals) but now take a look at LOW ASH oil hardly near as much additives lower TBN of 8 something, that low of a TBN number is something you will see in cheap oil..

Some of the problem are the calciums and magnesiums and other additives that are whats depositing they are great for anti wear but burn terrible and gum up when in a heated situation. now with DI it even worse.

I work a lot on Diesel this is no new news to me really the diesel fleets having to conform a long time ago with Tier 4 low ash oil and sulfurs.

0.5 Ash is really good
less than 1.0 is SO SO
above 1.0 is high Ash

GM knows there's a problem they are trying to bandaid i think with this new 0W-40 low ash oil..

I'm probably going to use the Mobile 1 Euro 0W 40 w a TBN of 12.7 and a vented catch can vs the Dexos low ash ESP 0W -40 TBN of 8.5