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Can't we agree on anything! LOL I'll just stay simple, uncomplicated (& ignorantly blissful) and continue doing Mobile 1 stuff.

Unfortunately it's still not a good replacement for Toyota T4.

Good to see I didn't get tar & feathered (at least not yet)! I was also thinking in terms of dino vs. synthetic - especially if 5k changes are followed.

I have watched this forum, and others for a couple years, and I now feel compelled to ask the question: Does it really make any significant difference which type of oil is used, regarding the longevity of an engine? Now before you flame me with all the reasons, think about this: People are...

Thank you. Thank you very much!

Thanks. But what about this quote from the Mobil 1 site? Doesn't this mean that it's API approved? Does saying this, but not having the starburst mean it's not approved?

Thanks for this info. If true, I definately won't use it! I'll check the Mobil 1 website to verify that it doesn't carry the API. That would be a BIG no-no for the next 4 years - 100k miles! From the Mobil 1 site: Doesn't this mean it's API approved & carry the "starburst"? [ July 18, 2005...

Thanks to all! I may have to check out the EP. Has anyone done much oil analysis with this yet - if so, was it much better than M1?

So you think because of the rougher conditions that the EP would be that much better? Isn't the EP just a G3 with more additives? Remember, I have to follow 5k mile changes as per warranty.

(I've lurked around here off & on for some time, but rarely post.) I'm trying to determine the best over-the-counter oil for my 2003 4.7L V8 4Runner. I tow some pretty good loads, live in HOTT Phoenix, and pull many mountains. My 4Runner is under an extended warranty, so I will change the oil...

How do you know that the ones made in Thailand are not as good - and in what way? I assume this is the ones my dealer is selling, but I don't have one on hand to tell. BTW - From the above post, it looks like the pix is of one made in Thailand, not Japan, as it has a metal inside, instead of...

Quote from Jimbo: "Assuming that we are talking about gasoline-powered RV's, I think the contaminant issue he is talking about are from the normal blowby, water, soot, unburned and partially burned gas, etc. The argument against synthetics is that these still build up in the oil and are bad, so...

Thanks for the replies. I keep to a shorter time period in between changes than many might with synthetics - just to be on the safe side. I also run synthetic blends all thru the drive line. My practice has been to extend the changing frequency by about 60% (e.g. 5,000 miles as apposed to 3,000...

Greetings! Over on the RV.net forum we have hashed this topic out to death on several occasions over the past year. While I think we're all pretty convinced of the merits of using synthetics in our RVs, one question always seems to be left unanswered. And this question would seem to me to be...