What happens to oil after 4 years in an engine?

Anything final on this?

 

Yes. Truck is running great. The truck idles high but i havent cleaned the IAC yet.

I did have to change the fuel filter as it was running REALLY rough at startup.
I also changed the oil after 500 miles and it was REALLY nasty.

The fuel gauge stopped working for some reason (which sucks).

Anyway, Bill did a great job on the truck and so far so good.

 

Yeah, as we discussed, it was a definite need to change the oil and filter soon. It will probably look a bit nasty the next oil change as well, but that one should be ok to do at the regular 3k mark.

I was worried about that fuel gauge when I installed the new pump. Was trying to save you some $$ there since at the time it was still working, but just really dirty contacts that only came partially clean. As for the high idle, if that cleaning doesn't work, bring it on down when you have a chance and I will take a look at it.

 

Marked for later.

 

Update. Still running great. The high idle was caused by the sticky IAC valve. A few taps with a hammer while idling fixed the sticking problem. Fuel gauge still reads empty or almost empty all the time. I will get around to fixing it sooner or later....