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I've made the suggestion before that we should set up a forum where all the BITOG experts could learn LSJ and Todd (project farm) a thing or two. Maybe CarCareNut would attend too. Perhaps we can get the mods to set this up.

And their rebate came fast. I purchased and submitted on May 29th. Had $50 rebate on June 11th. 13 day turnaround. Mobil should take note. (I didn't do Delvac this season due to their turnaround. I did do Rotella, Delo, Pennzoil, Castrol, and Mobil 1. Sheish.)

That's not what I'm arguing. I don't disagree that any particular OEM could/would specify a different lube if wear was the only priority rather than also considering cost, fuel economy, maintenance interval, corporate alliances, and/or availability, etc. Ironically, similar choices are made in...

I understand that the physical properties of oil changes with temperature and that behavior is planned/accommodated/designed/accounted for in the system. I'm not sure why that's all the sudden we're considering that "hard on" an oil. Now if you were to say we need an HTHS of XX at YYY...

I think you're confusing an oil's physical characteristics at temperature with thermal degradation. Just because an oil is a 20w at 100C (or beyond) doesn't mean it can't hold up at those temperatures. "German v6 turbo diesel" seems like an odd measuring stick for an oil. It's like saying...

Bulk buy pro-tec (jobber wix), $1.69 per filter. Or delco for $3.25. Wix or Baldwin for the big spenders at $5.20 each.

We can cherry pick data to try and make a point but your generalization is still incorrect. The LZO/LM2 runs hot in an attempt to gain efficiency and minimize particulate production. I'm not sure why high temperature would be harder on a 20 weight than a 40. Again, another generalization that...

I guess it's cheaper/easier than the old NYC taxi cab oil test wherein wear was measured by actual teardown and measurement of parts.

If so, only because of the presence of excess air (heat sink) at light load, and increased adiabatic expansion of the higher compression ratio. Not typical for all operating conditions. If you were correct, one would not expect diesels to have NOx issues. Instead, we jump through multiple...

Even with a drainback valve, the galleys will empty. All the oil flows out the "low" hole, which is the crank oiling. In my Cummins, the filter (no ADV) is mounted on the side of the block and vertical. Every time I do an oil change the filter is only 2/3 full. The supply circuit backflows...

I was buying filters from the dealer when they were $4 each. When their price went to >$10, there were better options. PE01-14-302A-MV IIRC the dealer carried two options, and the part number (above) was the cheaper. Came in clear plastic, no box.

I used the Guta on our last truck and travel trailer (eight sensors total.) Now using it on our travel trailer (new truck has TPMS) and put two of the additional sensors on the truck and trailer spares. Solar power means no wires. USB backup only if needed. It just sits there and does its...

Sometimes I post in confidence just to see if the "experts" can teach me anything. Trolling for experts. Forums are a pretty great place for this.

Used cheap dealer filters for 70k miles, then switched to 7317 on 2.0 skyactiv. Fram XG and then Carquest Premium.

Generalization does not apply to the LM2/LZ0. Look around for data on typical coolant/oil temps. "Much." That was also entirely not the point. LSJ says multiple times that DexosD spec is 0w-20. If you look at the approved oils list, it clearly includes 5w-30 grade...

3.0L LZ0/LM2

The issue is that: 1) He knows these engines show progressively less wear metals over their life. 2) His test showed progressively less wear metals as he went from oil 1-5…increasing viscosity. He doesn't know if it was the oil or the natural tendancy of the engine to "break in." (Nor do any...

I didn’t initially pick up that the absolute numbers were that small. On the one hand, lake is doing this as a side gig on the weekend. On the other hand, that cripples his ability to do sufficient testing to arrive at conclusive results. Everyone sees numbers and thinks...

It would've been as easy as repeating the delco oil at the end to re-establish the baseline. If wear metals repeated, boom, you've established causation. But he's a certified lubrication expert and has a youtube channel. After all, he said Delvac ESP 5w-40 CK-4 was PAO/ester. From the...

This one has really only needed an MAF sensor back in 2020 as far as repairs go. (The sensor was specific to the skyactiv, dealer only at that time. I was able to unplug it and limp the car home but it wouldn't run at all with it plugged in.) Everything else has been maintenance. Two sets of...