Originally posted by kickstarter:
My question is how to best drain the engine of old mineral oil. The tank is fairly easy I imagine. I will unplug it and clean it out. My concern is the engine itself.
1) You may want to continue to use your current oil until you get an external filter fitted...once you start to use the synthetic, the detergents are going to start loosening up the crud inside the cases.....you don't want that crud running thru your engine.
2) You don't need to be that meticulous about cleaning out the old oil before adding the new/synthetic. Pull the sump plug (flame suit on
) on the bottom of the case to drain the sump if you really want to get all the oil out (another 4 - 6 oz.). Just be sure to clean the area around the sump plug really well before removing and take care not to get any crud on the plug upon reinstallation.
3) With all the crud you'll be putting back into suspension and capturing in the filter, I'd plan on 1,000 - 1,500 mile intervals for the first couple of oil changes (including filters).
[edited because I can't count]