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I'm not trying to start competition between brands with this thread. Was just curious about what some of the members thought about my plan. I plan on changing oil in my toyota Highlander this weekend. Car has always had dino 5w-30 and fairly extended drains (about 7,500 miles). I plan to switch...

If I want to have a UOA done (never done one before) can I find the necessary containers at a local auto store? I don't have the time to order from a lab since I want to change the oil this weekend.

Try contacting a Mobil 1 technician, not the first person that answers the phone, but a real tech. See what they say about mixing. If you have the oil, go ahead with the mix. I doubt you will do any damage. When you change the oil do a UOA and see how the oil held up. Personally, I think it...

Unfortunately no Chevron Where I am in NY. Wish they had it though. When I started the post I should have been more clear about the question. I realize that all base stock gas is often from the same source. My question is really which brands of those I listed uses the best add pack. Sorry for...

Audi Junki, Why Mobil so low? I always thought Mobil and it additives were pretty good.

Where I live I have the following major brands of gas available: Mobil, Sunoco, Citgo, Hess and Getty. Generally speaking, is any one known to be better than the others? Which has the better additive package? Currently, I switch btwn Mobil and Sunoco every 5K miles or so. Mobil seems to be more...

Which sites?

2KBMW, Do you change that mixture out for the winter? It seems like it would be a little too thick for your winters.

Does anyone know whether the M1 5W-40 could be used for a 10K drain interval?

'98 528 I agree. I am simply interested in using the "better" of the 2 oils.

Little bit of redline fuel system cleaner in the first and last 5 gallons works for me.

Although I really want to use GC 0W-30 for my next oil change this Wed. for the BMW, I can't find it, even at the local Autozone. They have a Castrol Syntec 0W-30 but the back says made in USA using imported components. So from what I've read this is not the GC. I've been reviewing the UOA...

Your friend needs to drive the Bimmer more!! These cars are meant to be driven!! Sorry couldn't resist.

This was directly from the mouth of one of Robin's techs, not the dealer or salesman. I called Robin directly. I will go with a good synthetic next Probably a 10W-30.

Does anyone know whether the GC is a group iV oil? Or is it a group III?

Any problems with this? SUV is out of warranty and I thought that the Delvac 5W-40 would be a good way to try and prevent sludge build up in this engine which is know to get dirty. Will using a deisel oil or 5W40 oil hurt the engine?

I couldn't figure it out either. It makes absolutely no sense to me. Yes its the EH18V with filter. Great engine and I've currently got john Deere straigt 30 oil in it. Next OC will likely go to a pure synthetic.

BMW manual has oil viscosity chart that shows 5W30 oil being used up to 60 degrees. Above that temp. it looks like a 40 wt oil is needed. Why are so many people running 30 wt. oils that live in areas that get above 60 degrees. Does it have anything to do with the use of synthetic oil? Would I...

I admit when it comes to oil I don't know to much. But i've been searching the site alot, no really, ALOT and from what i can tell use of mobil 1 seems to yield higher iron results in the used oil. What is the source of the iron. What are acceptable lead #s? If the iron is higher in Mobil 1...

Sorry, I meant to say Iron in the original post. My bad.