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Auto maintenance pro. And my excel spreadsheet as a backup

The ONLY correct answer here is to contact BF Goodrich and have them determine the proper psi based on a load chart conversion for that Specific tire. My Tahoe came with a P rated 265 @ 35 psi. BFG recommended 50 psi based on the 3 load rating comparison / conversion. My Goodyear Duratrac...

Originally Posted By: jj51702 2-4K oil changes on M1 and you were expecting it to be anything but super clean? Do you know why the rear main and oil pan gaskets went bad? I'd expect M1 to keep them conditioned well especially at those intervals. I really did not know what to expect to be quite...

Originally Posted By: EricG IMO, with 2k to 4k mile oil changes, conventional oil would give similar results! Even with such short trips and the engine not reaching to temp? I have always figured it was simply cheap insurance keeping the oil changed. Now that I have installed a "Stahlbus" oil...

Originally Posted By: bigt61 Certainly clean. Are those motors known for rear main failures? How bad was the leak? Not to my knowledge. The leak was a drip here and there. It was eating me alive so I had to get it taken care of.

I had to get a rear main seal and the upper/lower oil pan gaskets changed on my 02 Ford Explorer 4.0. The vehicle has 101k A lifetime of M1 and Pennzoil Platinum have served it very well. The vehicle mostly sees short trips and yearly mileage ranges between 4,000 - 7,000 miles/year. The oil has...

I have an 05 F-150 4x4 V8 as a company vehicle. It has 140k on the clock and runs perfectly. It has thousands of hours of idle hours on it. There are days once I arrive to the job site, it will idle for 10+ hours, then a long drive home. It has done this since the day it was given to me with 5...

3-ML-95325-ML- Moved to UOA forum.

My bet is they topped the oil off when be bought the vehicle resulting in better additive/tbn numbers????

Alright guys, he got the oil sample back today via email. This oil by looking at it had well over 5k on it. It was black as could be, the filter was awful. To freshen up everyone's mind and to make a few corrections to my original post 2007 BMW 328I 3.0 v6 Oil is BMW Mobil 1 @ the dealer...

Averages around 75-80 miles a day since Jan. Drives it 1-3 times per week. City driving, occasional hwy.

[ADMIN NOTE]: There is a UOA report in this thread, it's just down in the third page... My neighbor came over this weekend and asked for a hand changing his oil & filter in his 2007 BMW 328 sedan. He took it to the dealer for an oil change (was going to pay the $150 for it) and they would not...

Found some Pennzoil Yellow bottle, swapped it out and and we'll see what the next OCI does.

The 04 I had posted using the M1 ran high numbers then leveled off. This 07 has had a spike as you can see. Some is from the GTX itself but I'm now starting to wonder whats going on. This past OCI was about 80% city driving, VS 95% hwy on the others. I hate to but maybe I"ll drain the GTX and...

Here's a report from my 2004 HD 6.0 (Same motor,etc) running M1 5w-30. Maybe its wise to change the oil to a different brand?

Still running short OCI's to keep an eye on things. Looks like the truck does not like Castrol too well. Here's the virgin oil that was sent in. Thoughts?

Got the virgin sample back. Sodium @ 165 Calcium @ 1776 Zinc @ 700 I'll upload the document later today and post the full report. I'm thinking it may be a good idea to change to a different oil??? What are the experts thoughts? Can the high sodium cause problems?

I sent the virgin sample of GTX in Monday. I will post the results as soon as I get them. I'm positive I used GTX, that's all I use. I'm guessing they are now using sodium as an additive? It has not shown up on previous reports this high... Thanks guys

Their comment of the "dangerous" levels of sodium have me concerned. Looking @ the reports of my 2004 6.0 HD sodium @ the same mileage with M1.. 7901 miles: 6 9986 miles: 4 11895 miles: 3

Not sure what to think about this. 2007 GMC 2500HD CLASSIC 6.0 4wd. Both these samples were mostly hwy driving. Can anyone offer any advice???? ????