Hi there vanagaunts,

Went to change the oil for the first time on my diesel conversion, AHU.

Certainly not the standard oil drain plug anywhere to be seen. But a bolt with allen head in the side of the oil pan [I think it's the pan at least].

It appears to be a 5.5mm allen fit but man is it tight!

Is this the oil drain on an AHU, is this the right size, and how hard should it be to get it out? I'm looking at using a small pipe wrench, which seems to me to be a bolt that is Way to tight, or it's not the drain plug at all.

Anyone?

Mike