I need to change the oil after doing the valve cover gaskets, I may have gotten a little coolant into the oil. Anyway should I do a flush prior to the change?

 

looking at that you should be flushing it before your next couple oil changes, but you want to do it gently; you dont want all that coming free and returning to the oil pan.
you want to use something that will desolve that back to oil not just free it up , because then it just going to get sucked into your pickup.
there are all kind of stuff on the market, i use 1-2 oz Kerosene a day before my oil changes.

 

Switch to Mobil 1.

 

This was all from the Previous Owner. I have no idea what he was using before, but I recently changed it out with Rotella.

I'll keep researching to find a good flush, unless anyone has a specific recommendation?

 

Kerosene is great for getting this job done and I've used it for years on many different engines. But if you want a flush in a pretty bottle then you are off to Autozone to waste $. Your call.

 

Should I run the kerosene while driving for a day or just a few minutes before the oil change?

Sorry for the simple questions, I appreciate everyone's help and input!

 

Marvel mystery oil

 

Looks like previous owner not only used cheapest oil he could buy also perhaps just topped it of when it was low, cause even with a cheap oil if he had changed it regularly in would not build up that much baked on cake!! It is really bad , if you try any kind of strong flush or solvent there is a big chance that chunk's of that crap will become loose and float around and will clogg a oil passage and could damage your engine at the best case, since its not doing any harm now use a high detergent quality (rotella as you said) diesel oil and change your oil in less than normal intervals and it will clean it up after 3 to 4 changes, it will not loosen any chunks at once will just desolve it gradually and clean up your engine , be patient , it's better than to take a chance on a flush with that much crap build up.

 

1 to 2 oz only run it the day before you change your oil