I expect to own my H2 for about 3-6 years...by then I probably won't be able to stand not owning the newest model of H2....which will have all the undeniable upgrades that we can't resist.
While I like to take care of my toys and treat them as if I'll keep them forever....you have to consider what your really doing is taking care of it for someone else down the line. Course, if buyers ask if it has had synthetic, it sounds good to say "yes".
I myself will change the oil every 3,000 miles...by then it always seems dark, dirty and in need of changing. An idea is to look for the Fram oil filter that is longer then the typical short ones you may find in stores. I think you may find a high quality filter better then the cheapo's they use at Jiffy-lube and other shops where overhead is a major component against profit! I personally use the Fram PH3675.
The manual explains that engine oil life is determined by RPM, engine temp and other related factors. While that may be the truth, I think the computer guides us on a 6,000 mile 100% to 0% scale. Funny how my engine oil life was exactly 50% when I hit 3,000 miles on the nose!
Hummergirl, I wish you had changed your oil at 3,000 instead of waiting. When an engine is breaking it, there is considerably more wear/tear and particles in the oil. I'll stick to every 3,000 miles at least until you reach 15K.
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