HOW could there
possibly be a timing belt which sits in engine sump oil, and SURVIVE for 150K+ miles?!?!?!?!
It would have to be a $500.00+, aramid/kevlar/carbon fiber composite material item in order to stand up to the corrosive acids, dissolved into the oil blow-by gasses, (DI amplified) raw fuel, and heat of sump oil,
especially at 10K mile+ oil change intervals!
IF I knew that our engines had this type of setup, it would be UNDER 3K mile oil changes for me, with the highest TBN/lowest TAN producing oil I could find, in order to try and 'save' that expen$ive to change belt, and possibly the WHOLE engine if this IS an interference deal, if and when it decides to let go.