"Ben Jackson" wrote in message
news:iM0jc.36507$w96.2637433@attbi_s54...
In article xGEic.24898$IW1.1210282@attbi_s52,

Shell has a lot of publications about aviation oil on their website.
Among other things their FAQ mentions that you can mix any of their
oils, so you don't have to know what's in the plane, you can put in
anything suitable.


That still didn't make me feel better when I put that quart of 60 weight oil
in with the 15W50 when it was 15F outside. Man, did THAT ever take a long
time to pour. In hindsight, maybe running a quart low for the 30 minute
flight would have been a better idea? Well, it was only 1 quart out of
10...