Quote:
Originally Posted by BigRuss
It only takes a few parts per million of engine oil usually from between liner and piston, valve stems or from the breather system to dramatilcally increase the amount of ash produced during combustion.
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Thanks Russ, but that increase surely cannot be significant otherwise every engine in the world, diesel and petrol alike, would suffer, according to the explanation posted by
T-Cut, from cylinder bore wear and high oil consumption.
Presumeably we are expected to assume that engine oil marketed specifically for diesels is "low ash", but I have not seen this specifically quoted by the manufacturer
on packaging. That begs the question: what about oil marketed for petrol engines, what is its ash content? That's never declared either as far as I can see.
All we get from the industry is the sort of wooly nonsense published by the ACEA!
So, I keenly await a post from anyone who can find oil packaging which declares scientifically its ash content.
Thanks for your useful replies Russ and
T-Cut.
Simon