This 3k & 5K oil change must be something that our father's taught us. Way back when, my dad did everything at 2K. If you were going somewhere and you'd be over 2K before you got back, change the oil before you leave! I'm still stuck on 3K changes with my 7.3L, and I'm still a fan of Rotella 15w40 year round.yea i am totally anal about the 5k limit i was raised every 3 k or you dont drive the car...
of course that was on conventional.
fired up the truck a few minutes ago and the oil temp was 36...hate the idea of going with a 15-40 when its this damn cold ...
i did a double change so now its easy every 5 k on the odometer 190 being next if i remember right
It took me a long time to convince myself that 5K was OK on the gas burners. Finally several years of seeing the abuse that the CHP vehicles go through and never in 25 years did I see an engine failure, I decided if they can do it, so can I.