no
Use 30w synthetic or 10w30 synthetic. 30w is preferred.
I believe that the oil needed is SAE 5w30, as is used in most vehicles.
It can vary between 30W and 10W30. L-heads use 30W, OHVs often use 10W30.
Use 10W30 and do not use 10W40 or straight 30W.
Sea 30w
Hd 30w
I like Mag 1 HD 30W oil but it's hard to find, Castrol's HD 30W would be my second choice. All major brands of oil today are of excellent quality. You can use any of them and know that your engine will be protected. I personally use Pennzoil.
Not without converting the system to R-134a and replacing the compressor oil.
SAE 30W
30W for summer
straight 30W, 10-30w and 10-40w are all ok and recommended
30w and if you want i higher quality oil, use synthetic