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Probably the E10, but the variation from station to station and brand to brand is enough you'd never be able to prove it.

LSPI mostly shows up a ventilated block. It's not wear, but at first pics make it hard to see that it isn't.

It's kind of puzzling to me how we're treating OEM approvals as merely co-equal with oil marketing claims. As if it's equally authoritative to have some oil company make a claim about the product vs having a carmaker test that product and sign off on it to their own stringent requirements.

I'd discourage this approach in strongest possible terms.

I'm not either, but I've picked up a bit from working alongside them over the years. The white layer on a typical gas-nitride cam is going to be below 0.001" thick. If you've removed enough material to clean up more than 0.001", you've probably trashed the surface hardness. Those pits are...

Weird. It almost looks like aluminum oxide, l Ash, but I doubt its from the add pack. The engine would have to be burning oil like its fuel to leave such deposits, I'd think. Seems to me it's likely to be fuel-related. Perhaps the previous owner preferred a local station that he thought was...

Another datapoint. Here is a BNIB camshaft for a 95L V16. That's a single camshaft in its two halves. The surfaces are not super mirrored because there's protective shipment preservative (like a modern Cosmoline) on them to protect from corrosion. Corrosion is catastrophic to cams because of...

Lots of people who don't look at parts regularly don't have much of a reference point for what good parts look like. Here is the camshaft from a Bosch CP9.1 pump after the pump had a top end failure at 31,000+ hours of service in a coal mine. New parts look very similar, you can barely see the...

The cam and all gears are toast, 100%. These are parts where the surface is critical. Corrosion compromises not only the surface finish (and thus oil film formation), but you've also compromised the surface hardness that is so important. If these parts don't fail immediately due to oil film...

Residual oil isn't necessarily evidence of leakage. Spray it with brake cleaner and see if any residue comes back.

I see no debris on any "clean side" parts. Lots of little chunks. No evidence any of them made it through.

Well, letting someone else touch your oil pan is a mistake that might have corrective consequences. Play stupid games, win stupid prizes, right? While this hypothetical might matter, it's somewhat moot because most oil drain places can perfectly screw up a plain old drain bolt. NOBODY but me...

Hmm, paying double the price of HPL for an inferior oil? Nostalgia is a powerful thing.

Well, considering the leaf spring stamping is obviously letting all the oil leak around the media, it's a miracle the media caught anything at all /s. (/s, since I'm on record as saying the leaf spring issue is a nothing burger). There's actually quite a bit of stuff in that media for a short...

Obviously that's the air version, but I can't say I've ever seen a similar tool in anything but pneumatic. The battery and electric cutoffs all seem to look like tiny circular saws and will NOT fit many places. Another option might be a big electric die grinder with a carbide burr. I had to do...

I do. There are two separate challenges here. One is removing the rust-siezed nut from the stud. The other is physically separating the BJ once the nut is off. A couple approaches come to mind. 1) Use a good locking plier (Eagle Grip) and you can grab the rusted end that used to be a hex. 2)...

He's saying the threads are an alternative leak path. Vacuum bleeding has a more significant pressure differential than what a Speed bleeder will do. Sloppy threads are always a potential leak path. There's no such thing as zero air in your brakes, it's just a matter of how close to ideal you...

I'd say that's probably your best option. Run it 3k, sample to confirm you can go to 5k and just dump every 5k from there on out.

It's perhaps less valuable if you bought a car using exotic premium glass. Most cars I think will still benefit. After seeing what Toyota built in the late 2000-2009 period and how the dashes melted into goo, I'd expect them to have learned a thing or two about UV degradation, elastomers...

All I will say about the 5.0 is that you never see those Nissans in a Cummins engineering facility parking lot. By contrast, a Ram with the 5.9 or 6.7 is *everywhere.*