mobile 1 oil... is it that bad?

FL 4Motion

You need to figure out what you are going to be doing with your car and then pick the "correct" oil for that application, ie. track whore only car, dd, semi dd and part time HPDE etc.

When in doubt, just run the manufacturer's suggested viscosity, ie. 5w30.

FYI, I run mobil 1 0w40.

dawudih

mobil 0w-40 if you intend on keeping it forever; otherwise save your money.

Teddy KGB

I'll probably catch grief for bumping an oil thread, but I just put in M1 0W-40 (changing from the Nissan magic oil) and a slightly larger filter: -9E000. The car has a little over 5000 miles.

Note: I'm not a Mobil fanboy. In fact, I've never put M1 in any of my vehicles. Rotella and Amsoil for the ATV and Sportbike, and good old Castrol GTX in "Maxine" for the last 140,000.

So far, I'm very impressed. I specifically remember the feel and sound after my last oil change, as it was part of a consumption test as well. (Passed it, so no new short block for me.) The Z sounds about the same, but the feel seems to be a little smoother, especially the revs from 5000-7000+.

The car seems to run about 10 or so degrees cooler as well. Even after the last change with the Nissan stuff I was still running 220 or so no matter how slowly/smoothly I drove. Any acceleration above what's needed for normal driving would drive it up to 230+ quickly. Today, the temp is 82 and sunny, humid as well, and I haven't seen anything near 220 all day. My temp now stays between 200-210 no matter how I drive the car. I took two trips to redline plus a lot of stop and go with the AC on, and the temp freezes at 210 and won't climb any higher.

I realize new oil will usually lower temperatures, but I certainly didn't see this kind of drop with the last change. I hope it lasts until my next oil change and I'll continue to put in M1. My $.02.

Z Quality

I'm sure everyone will appreciate your feedback, no worries about bumping this thread.

I will question when you made your last oil change. You state that the M1 0W-40 runs cooler than the last oil you ran, but I have a very hard time believing that the ambient temps are the same now as they were then. It's October now, so that would mena you changed the oil last in June or July. Not really an apples to apples comparisson in regards to oil temps since the average temp in July in Georgia is about 1 million and it's 75 in October.

roy'sz

If you wouldn't mind sharing some info on temps. What are you getting in winter and summer with both extreme temperatures?

Bonzo

The only thing I don't get in this entire thread is that some people are saying 0-40 is Mobil's only true synthetic. According to their website, all of their oils are now full synthetic.

What gives?

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roy'sz

^That is a completely true statement. BUT.....some oils are ranked differently than others. Example: Mobil 1 super 5000 is a ISLAC GF-4 oil and the Mobil 1 regular synthetic is a ISLAC GF-5. I wouln't say that 0-40 is a "true synthetic" in comparison to a 5-30 because all you are measuring against is the weight of the oil

Teddy KGB

Excellent point, and I should have prefaced the conditions of my last oil change.

The first oil change on the car was around 2000 miles, in April of this year. The temps were in the high 70's, if I remember correctly, and humidity was fairly low. That's what I'm basing my comparison on. Basically the same conditions existed then as they do now, and the temps were always around 220.

The last time I went to the dealer (before yesterday) was to have the oil consumption check, sometime in late August. They had to add about a half a quart of new oil and I only had 1500 miles since the last change. The temps outside were in the low 90's, but it was the week of Hurricane Irene, and the humidity was fairly low. I drove from Atlanta to Ashville, NC, where the temps were in the 60's to low 80's throughout the time I was there. Through the entire trip, whether on the mountain roads or cruising the highway, I never really dropped below 215-220 range. On curvy, fun sections of the road the oil temp would reach 230-240 fairly easily. Then, back on the highway, I'd drop back to 220.

Like I said, if the lower temps last then I'll keep going back to this oil. I need to drive more to see how it responds as the oil ages. I'd test it a little today, but it's in the 50's, and that's not an apples to apples experiment. Then again, I may just have a giant placebo effect going on and my car was trying to trick me for a day.

roy'sz

^^^I once read on a thread here that there was a guy that was able to get his car up to limp mode in 50 degree weather. Now he was tracking it which was a different story than yours teddy but just a fyi.

Teddy KGB

I don't doubt that for a second.

superchargedg

If you go onto some of the oil websites they will explain why it's the only tru synthetic oil mobil makes.bobstheoilguy is one of many.

__________________
My car is bone stock...i promise.

Bonzo

I will do that, thanks for the site, but on the quick, how do they get away saying they are all fully synthetic if they are not?

__________________
Finally Able To Order 2012 Model 8/24/2011
Delivered Tuesday November 15, 9:57 am!!!
2012, Auto, White, Sport, Kick Plates

FL 4Motion

iirc, mobil 1 at some point in the past switched out the type of base stock they were using (ie. cheaper to save $$) and still said mobil 1 was a true synthetic. There was a lawsuit brought against them by other oil manufactures and mobil won.

The only oil they make that still uses the "better" base stocks to create the finished product is 0w 40. Hence it's consistently better wear analysis vs. other mobil 1 oils overall over many different cars etc.

Bonzo

Ah, so they cheapened the mix. Interesting. Like corporate honchos and accountants forced the engineer's hands to save a buck.

Thanks for the down and dirty of it.

Although I must say, I think the oil vs oil thing is a bit over rated anymore. If you are tracking this car then yeah, I might be concerned. But for us normal daily driver sorts, I think the Mobil 1 5-30 will do just fine. It might not take this car to a million miles, but it will get it to 250,000 for sure.

__________________
Finally Able To Order 2012 Model 8/24/2011
Delivered Tuesday November 15, 9:57 am!!!
2012, Auto, White, Sport, Kick Plates

roy'sz

^ I know somone who has run 5-30 for 170,000 on the 350 and only had to change a thermostat. Other than that still tickin....