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2014 Jeep Grand Cherokee 3.0 Ecodiesel 188k miles Just completed walnut blasting the intake ports, replacing the glow plugs, water pump, oil cooler, and all the usual rubber hoses. Took it on a 600 mile trip, no issues, dropped off at dealer for Z46 HP fuel pump recall. Got it back pulled the...

Gone are the days you could find diesel oil at any shop and didn't have to be a chemist to understand if it was safe for your engine. I'm not convinced CK-4/SN oils are reliable for our diesel engines, I see CK-4 formulations of the same oil (ie Rotella) with less of all additive levels and...

FCA has officially changed the oil specification on Ecodiesel / VM Motori A630T 3.0 diesel engines from C3/MS11106 to API CJ-4 "Synthetic" 5W40. The change was made to the diesel supplement in the owners manual for all years. Can find yours here. http://www.ramtrucks.com/en/owners/manuals/...

Rotella T5 10W30 with half bottle 8oz of liquimoly MOS2. 4,000 miles. Still breaking in. Taking another sample soon from T5 with no moly added, 4,000 miles. http://www.jeepgarage.org/attachment.php?attachmentid=40620&d=1401752412

Pegasus and other LNG engine oil, what is the difference with this oil? On the surface looking at CST numbers looks like regular 15W40 HDEO.

Looking at new Royal Purple oil filter, looks like a good filter. Wix is now offering a synthetic fiberglass element filter for diesel engines, showing 60,000 miles OCI. Lot of people say bad stuff about Fram, but X2 filter is a synthetic element, been out for long time. Anyone know of other...

I get my DD Colorados I5's oil analysed once a year, I go 5,000 - 10,000 miles on an oil change using high end synthetic oil. Heres an analysis may find interesting, the I5 was sucking down quart of coolant every 5,000 miles. No external leaks, no smoke out tail pipe, no overheating, its going...