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Here's a bump. I am running this oil in my 2006 330i with N52B30. Previously ran Castrol 0W40 until it wasn't sold in Canada anymore, so I went with the M1 0W40. Performance seems to be just fine. With the Castrol I was burning around 1qt every 2k miles, with the M1 perhaps 1qt every 2.5k...

Originally Posted by kschachn Originally Posted by Nate_L I am concerned with 5w40 over 0W40 for the few days per year in Ontario where we have temps down to -25. There is no concern with that. Interesting you would say that. I just looked through a few different oils, for ASTM D5293 Cranking...

Why would Castrol and Shell (pennzoil) drop the LL01 rating from their 0w40 formulas only to put it back on the 5W40 formulas? Is it because they don't want to have to certify this oil against LL01 specifications ($$$) Here in Ontario we can't buy the 0w40 stuff anymore, at least at canadian...

https://www.youtube.com/watch?v=D0f3AYoE3cI

Originally Posted by MolaKule Doing fluid changes at approximately 30k minimizes varnish buildup on solenoid valves, a major cause of sticking and failure. Want to bump to ask this question again. I'm genuinely curious, what are the consituents of 'varnish' and do they read high in the UOA...

Originally Posted by ctechbob One of the things that varnish will do is eat up any clearance in the interface and cause things to bind up. Probably not a good idea for precision machined parts that need to move freely. That should show up in the UOA right? What are the consituents of...

I have a couple of questions about that. Which types of fluids are more prone to the varnish build-up? Dexron, Mercon, Shell M1375? And what would be the mileage that they start to degrade? What exactly is varnish, and How does the varnish impact the solenoids? Does it affect the seals on the...

I'm a little disappointed the previous owner didn't change the oil sooner, but realistically i'm not sure this would have helped much. I still had solenoid failure at 130k. $350 in parts, a day's work, and the car was back on the road. It took me about a month to commit to it, but it did solve...

Originally Posted by jayjr1105 Just regular 87 octane here in the states. That UOA was mobile 1 btw. I have supertech in the engine right now. About 3K away from the next dump. Well I doubt that the oil itself makes a difference regarding fuel dilution - i would expect this to vary based on...

Originally Posted by jayjr1105 2013 Skyactive here with no fuel dilution issues after a nearly 7K mile OCI... https://www.bobistheoilguy.com/foru.../re-2013-mazda-3-mobil-1-afe-0w20-6700mi Excellent. I wish I could get the supertech here in canada, I don't think they sell the supertech syn...

I am aware of this. I believe it is important to re-do, but not entirely necessary. I think the way the transmission is programmed is to use look-up tables for clutch preload pressure and application pressure. Those values are learned through monitoring gearshifts. That is why there is both a...

If I had my way brother would do his own oil changes every 6 months in our garage using whatever was on sale at the time. But he does not do his oil changes out of laziness and living in the city, so they are usually done by our local independent mechanic. When he passed the recommended OCI he...

I changed the factory fill (FF) trans fluid on my 2006 BMW 330i with the ZF6HP19 trans last August. I didnt like the idea of 12 year old fluid and filter, even though its lifetime there is plenty of evidence of these transmissions developing issues without proper maintenance. That being said, as...

Glad I found this thread. My brother just ran Total Quartz 0W20 for 8k miles in his 2014 CX5 with the 2.5. VOA of this oil is here: https://www.bobistheoilguy.com/foru...51080/total-quartz-9000-future-0w-20-voa Seems to be a pretty average synthetic. Most would not recommend running this with...