Hello I need some information and help…So I’m driving Harley FLH 1200 E-Glide year 7/1971 for 2 years and now I wanted to screw around myself…because I stay lying down more often and stand there like a stupid…..times it had run the air filter seal and once cell in the battery dry…Now I just want to know how it all works..I always have to fix something else but can not hurt or ?? So my problem is ….it has run out of oil for me b I wanted to burn my exhaust paint.But I also have to say that the Harley was standing for at least 6 months because there was no time to drive because of wintering, toddler and family.The engine had been made, new pistons and so it still has to be driven in. Now my question was the engine oil or transmission oil what is in the primary box???That was engine oil or because my measuring rod in the oil container where do I leave off the engine oil and transmission oil and fill the transmission oil again??Should I change the oil filter and the primary box seal ??Because it has run a maximum of 100 km…The oil filter still looks good and the seal on the primary box also ….Which oil do I use best for what ?? By the way, I am from Hamburg and would also be pleased about any help on site…. Greeting Dirk