231DF

No aux tanks. Tanks are 36 gals a side. With 9 gals indicated reminding I can only get 21 gals in (a side). If I keep filling (brim the tank till its practically spilling out and the watch it settle) I can get more fuel in but I don't know how much more is feasible (Usually I give up after a while of playing that game) Never had an issue with water ingress, and I sump before every flight.

Anyone have any suggestions as to fitting the fuel caps properly? I've had 2 instances where fuel has leaked from the tank in flight from around the outside of the cap. Cap appeared to be fitter correct both times. Also any advice of filling the tanks? Seems like I have air stuck in them and I can't get the tanks to fill fully. Thanks All!

Thank you!!

I didn't realize we had a downloads area! Thanks gents!

Hoping someone here has the 1979 M20K 231 Maintenance Manual and IPC's available to share? Thank you all, Adam

Looking for input from people with real world experience of running a 231 all the way to TBO without IRAN/ Top Overhaul etc. Thanks, Adam