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Ok changed the oil a couple days ago. 3 qt dino 10w-30 and 1qt MMO. The mixture is thinner now. Sometimes I can hear "sloshing" in the engine. I'm concerned because my cold oil pressure is about 80 PSI...then normally after 10 minutes on the highway it drops to around 70PSI...but with MMO it...

I'll be changing my oil this weekend...running a quart of MMO in a 4 qt sump, the rest being Pennzoil 10W 30. How long should I drive before I drain it out?

I'm still going with my original plan, starting in about 500 miles, but my next question is, how long should I leave a quart of MMO in my engine? 1000 miles? 3000 miles? Thanks for input.

If he just likes the feel of changing oil, then more power to the guy. Everyone blasts Rislone except tenderloin.

Thanks tenderloin...I've done a lot of reading about all this stuff, and I may have overlooked something about Rislone, because I thought it was just a quick flush..but after reading more I see that it is more similar to Auto RX. So I'll try MMO and if that dont work, then Rislone, cause theyre...

Probably so Brett, but I'll do an oil change in 400 miles and add MMO, posting progress.

Yeah, you guys might be right about the MMO. Or you may not be right about it not working at all...but that's all just because 99 percent of folks have great luck with ARX. And I do want to use it, I just have to convince my pop to let me use his card to order it, so I'll "appease" the old man...

Right, I thought about using Auto-RX, but since its so expensive I was going to do that as a last resort. From what I'm reading now I'm not sure how much MMO I'll add, but when I change the oil I'm going to put in Pennzoil 10W-30...I've read that its better to use dino oil with additives?

I've got a 1992 Grand Am with the 3300 V6, 101,000 miles. We've owned it since new, but my dad never changed the oil himself, and when he payed a shop to do it, it was at 7000 mile OCI's and they used dino oil. Well I've been driving it since about 96k miles and I know at least since then there...