..one more post on OIL
#472
11-18-2013, 04:47 PM
oil question
hold yer horses! I don't want to beat a already dead idea but do want to ask something. Last time I changed my oil I put Amsoil 20w-50 in all three holes ('12 FXDB) and then I felt a bit more metal rattling than the dealer installed oil. Talked to someone on this forum and they said they would only put heavier weight oil in their tranny. I forgot if some folks out heavy weight oil in their Transmission or Primary? I had a 75w-90 on hand and put it in one of the holes and think it was the transmission. I do not think people put these heavy weight oil in the primary right? Cannot find my notes but want to confirm before I go ahead and change all fluids.
#474
11-18-2013, 04:57 PM
now you've thrown something in the mix.
really? aft in the primary? funny thing is HD recommends same 20w-50 in all three holes and I presume they have tested this and recommend this otherwise they'd have a lot of warranty issues.
really? aft in the primary? funny thing is HD recommends same 20w-50 in all three holes and I presume they have tested this and recommend this otherwise they'd have a lot of warranty issues.
#477
11-18-2013, 05:04 PM
Road Warrior
I'VE used Harley's Screaming Eagle synthetic in all three holes.... bike has run flawless for the past 4.5 years.....im no oil guru and don't want to be....works well for me...
#478
11-18-2013, 05:05 PM
I believe 20w-50 engine oil is a heavier viscosity than 75-90 gear oil.
actually they're about the same viscosity https://www.hdforums.com/forum/oil-a...-gear-oil.html
actually they're about the same viscosity https://www.hdforums.com/forum/oil-a...-gear-oil.html
Last edited by Ridewva; 11-18-2013 at 05:16 PM.
#479
11-18-2013, 05:05 PM
hold yer horses! I don't want to beat a already dead idea but do want to ask something. Last time I changed my oil I put Amsoil 20w-50 in all three holes ('12 FXDB) and then I felt a bit more metal rattling than the dealer installed oil. Talked to someone on this forum and they said they would only put heavier weight oil in their tranny. I forgot if some folks out heavy weight oil in their Transmission or Primary? I had a 75w-90 on hand and put it in one of the holes and think it was the transmission. I do not think people put these heavy weight oil in the primary right? Cannot find my notes but want to confirm before I go ahead and change all fluids.
Check out Spectro, they have a specific oil for the primary chaincase and another for the transmission which is a 75W140 called HeavyDuty platinum 6speed
