07 FLSTC
Well, I submitted, as a novice to letting the dealer replace all oils with SYN3 as "recommended".
I know a guy can go from fossil to syn, but what problems might I encounter if I drain SYN3 and replace with others that have been recommended.
Namely,
Mobil 1 V twin 20w50 crankcase
Redline shockproof heavy for the trans
Spectro Heavy Duty Platinum 75/140 for for 6 speed transmissions
Any other recommendations?
Also what about fuel injector cleaners?