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What cost is too much if it works? I think these types of products are fine if they are effective at doing what they're labeled to do. Seafoam is...

Wondering why someone hasnt done a test on these treatments..Seafoam ain't cheap..

Whatever you have done is working at 400000 + miles My only Dmax has issues and smokes, i dose it with ATF once in a while, but i think the issues...

I add a can of Seafoam prior to a long trip. I have an 06 with 154K on her. Seems to help but then again a long trip helps after mostly city driving....

Yeah, like asking what's the best oil brand to use... They work, if you ask the people selling a service that does the service. It might work, if...

OK then....

Welcome aboard! Aside from the thread you posted in here, you can also sort through the other individual threads here:...

I use Bass Pro Synthetic 2 cycle oil for lubrication 10 oz for 25 gal diesel. I would use power service for jelling.

Looking at doing a duramax in a 2000 OBS k2500 frame. Wanting to do a ful LB7 drivetrain and dash. Any help?

Many times over the years I've asked myself almost the same question, but then, I ask myself, "how much would it have me cost to keep that ratty old...

I know I will regret it, like every baby boomer who sold a 69 Camaro for $2k, but it's sold. Got $5,000 for it and I kept the new red top batteries....

Do still have a catalytic converter in the system? If so remove it for testing purposes. My 1998 Burb had one when it was abandoned, plugged up....

I am suspicious of the EGR and the Baro readings. A stuck or improper EGR function will cause huge clouds of smoke. Be sure the air inlet...

Im starting to worry about my injectors now, 428,000 miles on them.. My best friend lives in eureka I came here from Bishop, Calif in 2017

Thanks for keeping us in the loop on your journey. BTW - I visited Klamath Falls in 2007... its not that far... ;) If I were a younger guy I'd go...

Do you have a spare known good PMD? A spare PMD is as useful and as important as having a spare tire... In this case it would allow you to...