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Recently we've been seeing alot of valve guide and valve stem wear issues. Mileage on the engine seems to play no role in the wear patterns we've seen. I'm not sure where these issues are stemming from, if it's new oil formulation or simply lack of maintenance. Has anyone found certain oil...

I have a complete 6.4 motor with approx 140k miles, in parts and pieces. The block is damaged. All the pistons on the RH side have heat damage from bad injectors. The cylinder head from the RH side has visible cracks. RH cylinder head, has visible cracks between valve seats. $50 LH cylinder...

I have an 04 in the shop right now with 68K miles. It came in as no start, 3 months ago I went over it for the guy, replace HPOP, IPR and Oil cooler also installed a coolant filter, new coolant and egr delete. The problem now is no low pressure oil due to a piece of metal holding the reg open...

Hello all! I see there's some good tech info here.