Engine/Transmission (1998.5 - 2002) Filter change interval

[TFlewitt]

Done some searches and reading - can't find much. What is the recommended filter change internal for the full flow and bypass filters for extended drain usage? I have a Franz bypass filter. Is adding a quart of oil when the filters are changed enough to "renew" the additive package, or should I be using something like "Power Services - Diesel lube oil extender"? Thanks!

 

[JCyrbok]

Done some searches and reading - can't find much. What is the recommended filter change internal for the full flow and bypass filters for extended drain usage? I have a Franz bypass filter. Is adding a quart of oil when the filters are changed enough to "renew" the additive package, or should I be using something like "Power Services - Diesel lube oil extender"? Thanks!

I dont use any additives in the oil, I just top off with oil when I change the filters.



As for filters I change my full flow every 5000 miles and my by pass every 10000miles, but I have a Amsoil by pass. I have heard that you need to change a franz about every 3k miles but Not sure. I'm gonna run my current by pass cartridge for 15k this time around to see if there is any changes in flow/sample quality.



I just sent in my 35K mile oil sample last week running like this (thats 35K miles on the current oil since last change).



J-