Since we all like a good oil thread...

[Nessism]

Was directed to this guys blog on a car forum...https://540ratblog.wordpress.com/201...-test-ranking/

Dude's very opinionated but I believe he makes a lot of good points.

He came up with some sort of friction test in order to rate different oils. He tests them at common running temperature which replicates actual running conditions.

He rates big buck synthetics like Amsoil highly, which is consistent with other oil tests I've seen, which lends credence that his methodology is solid.

Some good info regarding oil for motorcycles, including his hatred for JASCO and their MA rating (like I said, he's opinionated.) He also says using Zinc as a high pressure additive is old technology and the oil industry has moved on.

Anyway, I drunk the kool aid to some extent and ordered some oil for my car that rates high on his list.

BTW, many of the diesel oils we like so much, like Rotella 15W-40, don't rate very highly. Take it for what it's worth.

[Grimly]

Yeah, I found his site a couple of months ago.
He's a bit ranty, but I found his observations kind of co-incided with mine (or we shore up our mutual prejudices) and his reasoning of why clutch slip became such a bogey-man over the years and the running from low-friction oils and additives as a result quite interesting.
Damn those Nice People You Met On A Honda; if it wasn't for them we could have kept our MANLY clutches and gorilla-like fingers.

As an aside, I ran into clutch slip at 80 thousand miles, and guess what? - The old springs were weak. The plates were fine on examination. I replaced them anyway, but the old ones will do fine as a spare set once deglazed. I put in a mix of 3 HD and 3 new OEM springs and now have a clutch as manly as any old Brit snotter ever had.
This co-incides with the observation of BITOG's Busy Little Shop poster who reckons he's never had a slipping clutch pass through his hands that wasn't sorely abused or had high mileage. From personal observation, I know that the only previous GS clutch problems I had on either bike were caused by high mileage, and it wasn't slip, it was endless high frequency motorway miles that led to the plates notching the baskets. Istr replacing springs on them once or twice but never had to buy new plates.

[LAB3]

Yeah, I found his site a couple of months ago.
He's a bit ranty, .

A BIT? I'm sure there's some good info there but after giving it a couple of minutes reading time I gave up. He used well over 2,000 words (up to that point) to cover what 50 better chosen and arranged ones would have conveyed. Like Einstein said (or close to said) If you can't explain something simply it's because you don't know what you're talking about.