Draenor
KILL ALL HUMANS!!!!
Draenor has pretty much covered it. The color isn't so much the issue. Being black also is a good sign that it is keeping the inside of the engine clean by keeping all the contaminates in suspension and creating sludge. Some of the Toyota engines are considered sludge monsters but the ones in the 4 Runner are not, so that is a good thing.
An oil analysis is the way to go if you are really concerned. More than likely they didn't put a full synthetic in but a blend.
Since you changed it out and put Mobil 1 in, it will be interesting to see the difference in the oil when you change it again. Just curious as to what brand oil filter did you use?
I put a Mobil 1 oil filter on there. The dealer usually throws a Toyota filter on there but like I said, this one was a PITA to get off. I dented it up a little bit with the filter wrench trying to get it off. My wife called and complained about the filter but the Service Advisor told her it has to be that tight to ensure it doesn't come off. Whatever
I have always used Mobil1 in my truck and Royal Purple in everything else and like the results. I usually throw a K&N oil filter on my truck as well. I did really like the Fram with Teflon (black filter) but I can't find them anymore around here. When I take it to the dealer, they always use Mobil1 and I bring them a filter to use. Plus I know the guys in the quick lube bays and I trust them and I also hang out with them for a little while and chat while they do the work.![]()
Stay away from the Fram oil filters. Filters are to have a light coat of oil on the ass gasket and hand tightened and turned just a 1/4 more. There should be no need for a wrench.
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