Len, I've never seen a published figure but watch your oil temperature gage. If your oil doesn't get to 170 degrees, you probably need to restrict the air flow to the oil reservoir. Some people add a cover below 40 degrees or so on the ground -- which is probably a good idea depending on where you are flying and the weather pattern you're flying in. If your oil doesn't get hot enough, you run the risk of condensation in the oil tank which can cause a rather expensive problem. The key seems to be keeping the oil above 170 degrees and monitoring the temperature while flying to keep it out of the red.
John Roach N 2427H airslot4518 wrote: > > Concerning winter operations at what temp do you install the oil cooler > cover. Looked thru my reference materal but could not find it but sure > its published someplace > > Len > >
