Have used this oil for the last 25,000 miles in my 1991 BMW R100GS. After the last oil change I sent a sample of the used oil off for analysis. I used it 2500 miles and it held up remarkably. The TBN was still above 7, and wear metals were very low. I use this oil basically to slow oil leaks at the pushrod tube seals, and it has done a remarkable job at this. In the 2500 mile run, I only had to add 8 oz. of oil. A look under the valve covers shows no sludge, and only very light varnish. This is a great specific use oil that I hardily recommend.
Was this review helpful to you?