is mobil 1 v-twin oil good for , engine, trans and primary chaincase?? or should i use 3 different oils, for a 2005 Harley Road King, thanks

You can certainly use it in all three holes if you like. Some folks prefer to use a gear oil in the transmission such as AMSOIL'S 75/90 Severe Gear. I am sure Mobil and Redline also have a gear oil. Harley has a gear oil that is petroleum based which works well also. Choices, choices

Bear

Yah I use 3 different viscosities... 20-50 for the engine, 75-90 in the tranny and 10-40 in the primary...all Amsoil. Maybe a bit obssessive but it all costs the same so why not.

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2005 FLSTFI
95" Stage 2
SE Pro 2 into 1
SE Pro Super Tuner
Smokey Gold/Vivid Black

Autozone will carry the Vtwin 20w50 for the engine &amp\\; primary and M-1 75w90 for your trans.

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06 FXDLI

God Bless our people in uniform for it is their courage and sacrifice that make our nation great.

Redline heavy duty shockproof in the tranny, and you'll never, ever go wrong.&nbsp\\; That trans will outlast your motor.&nbsp\\; Any good syn 20-50 changed regularly will serve the crank, and the primary could be whatever.... I use the MOCO Primary just cause it's easy to get, find, and have on hand.&nbsp\\; CCRyder

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Grandpa used to say: "There are two kinds of bikers, those that ride HARLEYS, and those that wish they did...."

i agree you should use gear oil in the tranny for best results ii use severe gear amsoil
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since i changed to amsoil my tranny is quiet and&nbsp\\;shifts better now

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06 Road Glide se stage 1 a/c se mufflers
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