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So what is the opinion on the board? Smitty's Semi-Syn is on sale @ kmart for $10/5qt. I recall reading it is a strong/stout oil, but which would you pick?

DIRK: From what we can see, this Castrol blend did just as good a job as the previous Pennzoil platinum. Actually, iron (from steel parts) is reading a little lower than before -- this level is more on par with what we were seeing back in 2012 and 2013. Not that the 25 ppm from the previous fill...

so I am running the synblend in the Yukon with the M1 filter that I left on from the prior oil change. I have 6,800 miles on the synblend currently. OLM is at 18%. I am debating whether to keep it in and run down to about 5% or change it out. I have not had to add any oil so far. The oil I got...

OIL Napa Syn5w30 MILES IN USE 6.2k MILES 194.3k Makeup Oil 0.25 qt SAMPLE TAKEN 1/11/15 ALUMINUM 5 CHROMIUM 1 IRON 25 COPPER 4 LEAD 4 TIN 0 MOLYBDENUM 14 NICKEL 1 MANGANESE 0 SILVER 0 TITANIUM 0 POTASSIUM 4 BORON 6 SILICON 15 SODIUM 248 CALCIUM 1885 MAGNESIUM 33...

for a replacement air filter - they claim they are similar to a Fram air filter.

just wondering thoughts on this. . . think I could use it in wife's car? She is not an aggressive drive, more like a soccer mom driving around town.

Code: OIL M10W40 BMW5W30 MILES IN USE 6,292 8,873 MILES 125,685 70,634 SAMPLE TAKEN 08/30/14 08/19/11 Makeup Oil 0.75 qt 0.50 qt ALUMINUM 3 5 CHROMIUM 0 1 IRON 10 17...

thoughts?

So I drive home and notice fresh oil on ground where I park my yukon. It appears leak is coming from the mobil one m107 filter that has 6700 miles on it. I just got back into the country after a week on business.. First time I saw leak like this. It clearly was at the filter since there was some...

so thanks to the board, I scored 42 qts of Napa Synthetic 5w30 for 1.52/qt (pre tax). I have a ton of purolator classic filters for my yukon so I am set there (as I was planning to do 6,000 mi oil changes) but then I was thinking about the Boss' X5. so 2 questions; 1) Do you think that the Napa...

I have a 2004 GMC Yukon with 177,000 miles. No problems and not burning oil. currently running M1 5w30 with a M1 filter. Picked up a ton of Purolator classic filters and also have a number of m1 filters. current oil changes are 6,500-8,000. thinking about running 5-6,000 mile changes and using...

local kmart store is closing. oil filters were 50% off - mainly purolator. picked up 10 purolator classics for my yukon @ $1.99 each

Long time lurker here. I had a question about mixing say several quarts of NextGen 5w30 with Mobil clean 5000 and maybe a qt of Mobil 1 (basically, random leftovers) for coming up w 6 qts for my Yukon. Would this be a problem? Would it really screw up future UOAs? thanks in advance