How often should oil be changed on a high mileage truck?

[BaxterThomas]

I’m talking a truck with 100k miles or more. Do trucks with this high mileage require more frequent oil changes? If so, how often should it be changed?

 

[tibadoe]

Everyone seems to have their own ways and this is mine: I change the oil at the same intervals whether low mileage or high. If I use dino oil I go 3k miles between changes. If I use synthetic oil I go 5k. You can go further on syn oil but I believe the oil filters can't. No need in having a oil filter in bypass mode - it's not filtering a thing.

 

[elwoodbrewer1922]

Questions,,,i have a 1990 pickup. V6 efi. Broke timing belt. Where is a good remanufactured.engine supplier?.thanks Dave Brewer