Join Date: Jul 2006
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The oil thing will vary depending on who you ask, everyone has a personal opinion.
I like Amsoil synthetics. I use their air filter, oil filter, motor oil, gear oil, trans fluid. Then i run a wix fuel filter because they are better than most others.
I think that cummins recomends running 8,000 on a conventional oil change. I usually run 5-6,000 on conventional Rotella. I haven't heard anything about the Rotella synthetic, but their stuff quality.
On your fuel filter, when you put an aftermarket pump on you will notice that they suck alot more of the crud out of the bottom of the tank. Because of this, its prolly a good idea to change the fuel filter when you notice your fuel pressure dropping about 2psi. It shouldn't take as long as it usually does to stop up a filter which. Make sure you always use a quality fuel filter.
And service your truck yourself, i have heard and seen where a service station doesn't tighten the oil filter all the way, besides they are making alot of money off of you.