Originally Posted by Bernard Hartnell
Understand Scott, I’ve never done an oil change with the cowl on. I also always change the filter. I see the filter as cheep medicine given the overall cost of the motor. Even Walmart does this with their cheapest oil changes. So if that’s the standard for cars all the more reason to do it with my plane. Back to the quick drain; thanks for your thoughts ind info on the 14 tail dragger because I have the IO360 also but with the forward prop govenor. But our sumps May be different because the crossover exhaust is directly below the drain plug. Looks like about 3” below the drain hole. Should that distance be no factor for the Vans catolog quick drain?
The standard models of angle valve engines recommended for the RV-14 have an oil drain port on the side edge of the sump in the back.
This can be seen on DWG 43-05. It is the unlabeled fitting port adjacent to the fuel pump inlet fitting in the drawing. This is where the oil drain is installed on both RV-14 prototypes.
My comment related to short cut oil changes is because many RV owners with quick drains do this. It is possible to drain the oil using a hose attached to the quick drain, and also change the filter, with only the top half of the cowl removed.
It is a very bad practice and I encourage all RV owners to not be tempted.
Complete cowl removal for the oil change is a perfect time to give the entire engine installation a good careful look over.
If everyone did this, I believe that "guess what happened to me today" storys caused by failures in the engine compartment would be just about nonexistent.
BTW, using the drain port I described is beneficial in more fully draining the oil because of the nose up attitude. Particularly on the tail dragger.