Oil Viscosity and Evo's...
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Seasoned HDF Member
Joined: Mar 2010
Posts: 21,117
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From: Poolville
Oil Viscosity and Evo's...
I was looking in my service manual trying to find what's the rake in degrees for my Fatboy and I ran across the engine oil recommendations and was just wondering, for you guys that live in the warmer climates above 80° f do you use straight 60 weights? And should we...? For me on Long Island I know ambient temps easily get into the 90's and road temps easily get to 120*.. So I was wondering do any of you use Straight 60 weight as recommended? I garage my bikes so cold starts don't get below 50*..
When I was riding shovels, 60 weight was totally acceptable..
one more question, Does any one know what the rake is on a98 Fatboy???
Thanks.. keep warm..
When I was riding shovels, 60 weight was totally acceptable..
one more question, Does any one know what the rake is on a98 Fatboy???
Thanks.. keep warm..
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Seasoned HDF Member
Joined: Mar 2010
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From: Poolville
Thanks Tony.. I was only asking because of what I read in the FSM.. I as well have been running the 20w-50 and when I can find it the Pennzoil 25w-50... Do you happen to know what the rake is?... I'm actually more interested in the rake...
Road Master
Joined: Nov 2013
Posts: 1,216
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From: Buford, GA
Post #7 in this thread said 32 degrees. https://www.hdforums.com/forum/evo-c...and-trail.html
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Seasoned HDF Member
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From: Poolville
Not sure on the rake Bob...sorry.
Post #7 in this thread said 32 degrees. https://www.hdforums.com/forum/evo-c...and-trail.html
Post #7 in this thread said 32 degrees. https://www.hdforums.com/forum/evo-c...and-trail.html
Advanced
Joined: Mar 2015
Posts: 51
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From: South East
In your case use 20w50.
Straight 50 or 60 are obsolete nowadays and Evo does not need it, and even if you want use it i would only recommend them in really all-year hot climates... but even in that case you can use 20w60.
Straight 50 or 60 are obsolete nowadays and Evo does not need it, and even if you want use it i would only recommend them in really all-year hot climates... but even in that case you can use 20w60.
Last edited by davicico; Jan 30, 2022 at 08:00 PM.
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Road Master
Joined: Jan 2019
Posts: 1,123
Likes: 909
From: Texas
60 weight straight oil in the May- October months here in East Texas, and Service Manual straight oil recommendations in all other temps.
. Straight- grade oil has worked consistently for me. The latest-greatest doesn't mean better.
. Best wishes to you,98. Ken
. Straight- grade oil has worked consistently for me. The latest-greatest doesn't mean better.
. Best wishes to you,98. Ken
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Seasoned HDF Member
Joined: Mar 2010
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From: Poolville
I take it you get the VR1?
Club Member
Joined: Mar 2009
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From: Niles Canyon Ca.
Yup, Only reason the manual suggests straights in the summer is lifters and valve train. They can say 20-50 is the same but the engine does rattle less when hot with straight 50 or 60.