steve wyman
Well Known Member
I just finished the annual on my RANS S-7S, and, in the process, I switched over to the new oil, that is now recommended by Rotax. It is Aeroshell Sport 4, and is available through most of the Rotax dealers (Lockwood, Air- Wolf, Leading Edge Airfoils, etc.) I had been using the previously recommended Pennzoil motor cycle oil for the first 230 hours. I flew the airplane, post inspection, Sunday, and lo and behold, my oil temp is now about 10 -15 degrees cooler! I'm not sure what accounts for the difference, (the new oil is 10W40, instead of 50 weight, like the Pennzoil- maybe that's the difference). Anyway, I'm sold on the new stuff- it was, after all, developed specifically for the 912 series Rotax's. Just thought I'd pass it along. Steve