Do I have to use 20-40 oil? - Victory Forums - Victory Motorcycle Forum
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post #1 of 19 (permalink) Old 10-21-2010, 01:42 PM Thread Starter
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Default Do I have to use 20-40 oil?

Ok I'm new to my Kingpin but in the UK this 20-40 is hard to find and expensive. Can I use 20-50 or 10-40 semi? Harleys run happily on 20-50 so why not Victory?

If this topic has been done to death then apologies and direct me to the link!

Thanks and hi to all
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post #2 of 19 (permalink) Old 10-21-2010, 03:35 PM
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Not sure about the weight question but in regard to HD running it. HD's are not Vic's and are very very different. First off the tranny and engine share the same oil on a Vic.

What may work on an HD may not work for Vic.


I'm sure Kevin will chime in about the weight.
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post #3 of 19 (permalink) Old 10-23-2010, 09:41 AM
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Ive been using Amsoil 10-40 for awhile now and really like it. In the summer time 20-50 is fine, its more of a hot weather oil. 10-40 is alittle better for cooler weather and wont be as thick and protect alittle more with cold starts beings it will pump through the engine sooner then a 20 will when cold. Both weights are fine during warm weather but i would recommend a 10-40 for the cooler weather. A good oil with out friction modifiers will be fine. Most car oils add friction modifiers to be slicker but all that will do in any wet clutch setup is make the clutch slip. Theres a fine line between slick and too slick with any wet clutch system and ive ran Amsoil for years in all my MX bikes and never had a clutch slip. Yes its synthetic but it doesnt have friction modifiers in it and its designed for wet clutches. A good oil changed on a regular basis is all you need. 2500 miles is what vic recommends to change at. I usually get 2500-3000 out of my change. I usually now when its time to change it cause the tranny starts to shift alittle different so i know the oil is breaking down and its time for new stuff.

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post #4 of 19 (permalink) Old 10-23-2010, 12:42 PM
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Mobile 1 V twin oil 20-50 is JASO MA rated and Victory says that is an acceptable alternative.

I am going to try in my 08 Vegas Low with a stage 1 kit

Last edited by PierceEye; 10-23-2010 at 12:47 PM.
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post #5 of 19 (permalink) Old 10-23-2010, 01:36 PM
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Quote:
Originally Posted by PierceEye View Post
Mobile 1 V twin oil 20-50 is JASO MA rated and Victory says that is an acceptable alternative.

I am going to try in my 08 Vegas Low with a stage 1 kit

Yep that oil will work fine for you. Its similar to amsoil beings its a full synthetic oil but it has no friction modifiers in it so that the clutch will not slip. Also motorcycle oils are higher in phosphates and zinc to help with the shearing of the oil that the tranny does to the oil. Motor cycle oils are also stable above 250 degrees unlike most car oils that break down around that temp. Like before, just find a oil that is desighned for motorcycles with a wet clutch and change it when you are suppose to and you are good. As for the weight in oils like i said either one is fine but a 10-40 would be better recommended if you plan on doin any riding when its below 50. Other wise 20-50 will have alittle more protection on those hot 90-100 degree days.
Good luck

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post #6 of 19 (permalink) Old 10-23-2010, 01:39 PM Thread Starter
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Default Thanks all

Yes I'm not going to use Victory oil simply because it will cost me £48 delivered (about $75) and I really can't believe that 10-40 or 20-50 motorcycle oil is going to do any harm. If I lived near a Victory dealer then maybe! I'll report back if any issues arise.
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post #7 of 19 (permalink) Old 10-23-2010, 01:56 PM
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Quote:
Originally Posted by Trvshonda View Post
Yep that oil will work fine for you. Its similar to amsoil beings its a full synthetic oil but it has no friction modifiers in it so that the clutch will not slip. Also motorcycle oils are higher in phosphates and zinc to help with the shearing of the oil that the tranny does to the oil. Motor cycle oils are also stable above 250 degrees unlike most car oils that break down around that temp. Like before, just find a oil that is desighned for motorcycles with a wet clutch and change it when you are suppose to and you are good. As for the weight in oils like i said either one is fine but a 10-40 would be better recommended if you plan on doin any riding when its below 50. Other wise 20-50 will have alittle more protection on those hot 90-100 degree days.
Good luck
I live in Tampa Florida......its 89 today LOL
It might hit the 40s a couple times a year....average temp is closer to 90 so I am going to use the 20-50
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post #8 of 19 (permalink) Old 10-23-2010, 03:15 PM
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Quote:
Originally Posted by PierceEye View Post
I live in Tampa Florida......its 89 today LOL
It might hit the 40s a couple times a year....average temp is closer to 90 so I am going to use the 20-50
Ya i seen it said you were from tampa FL and figured you dont see to much cold weather. LOL But with him being in the UK i wasnt sure what temps he was gonna be in.
Here is a break down of all the leading motorcycle oils for 2009-2010.
Its both SAE 40 and SAE 50, pretty cool to see how all the top oils stack up against each other. I was actually surprised about some of the oils in the tests.
http://www.amsoil.com/lit/g2156.pdf
Overall in the 50 wgt catagory amsoil and mobil 1 vtwin where the top 2.

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RPW Swept pipes

2013 red blacked out cross country
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Ness grips
Ness Rad III mirrors
Noemtz Thunder Monster exhaust
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PCV
VM1 Cams done by Rylan @ The Vic Shop
lloydz timing wheel
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post #9 of 19 (permalink) Old 10-24-2010, 01:00 PM
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Ok So I did the swap...in went Mobile 1 V-Twin 20-50 with 3600 miles on my 08 Vegas Low
I also put in new plugs at the same time.

As soon as i fired it up to make sure all was sealed I immediatley noticed (heard) a much quieter motor. The valve train (my bigggest bitch about the Victory motor) was 10 times quieter

So off for the road test.......Yes it shifts cleaner and yes i can find neutral easier

But what about the clutch after running it for 30 minutes at 50mph......
I took it to a newly paved road and from a rolling start I pulled in the clutch rev'd the motor up dump the clutch and away went the back tire up in smoke.....no slipping there.....so lets try a dead stop launch...
rev'd her up held it steady towards the upper mid to upper rpm range and dump the clutch and no clutch slippage......(tire smoking yes)
so into 2nd at the upper end of the torque range and back tire broke loose for a second

So in my opinion so far I see no clutch slippage engine is quieter and engine temp is about the same as before.....240f

I will update in 500 miles.
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post #10 of 19 (permalink) Old 10-25-2010, 09:28 PM
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Quote:
Originally Posted by PierceEye View Post
Ok So I did the swap...in went Mobile 1 V-Twin 20-50 with 3600 miles on my 08 Vegas Low
I also put in new plugs at the same time.

As soon as i fired it up to make sure all was sealed I immediatley noticed (heard) a much quieter motor. The valve train (my bigggest bitch about the Victory motor) was 10 times quieter

So off for the road test.......Yes it shifts cleaner and yes i can find neutral easier

But what about the clutch after running it for 30 minutes at 50mph......
I took it to a newly paved road and from a rolling start I pulled in the clutch rev'd the motor up dump the clutch and away went the back tire up in smoke.....no slipping there.....so lets try a dead stop launch...
rev'd her up held it steady towards the upper mid to upper rpm range and dump the clutch and no clutch slippage......(tire smoking yes)
so into 2nd at the upper end of the torque range and back tire broke loose for a second

So in my opinion so far I see no clutch slippage engine is quieter and engine temp is about the same as before.....240f

I will update in 500 miles.

that is a fair attempt to check the clutch. In order to know if you have a slipping problem it would take some time for the new oil to get into the clutch. Remember the plates are very close together so it will take time for the oil to get into those small areas. 3rd or 4th gear is the gear I use to test a clutch.

The good part of the Victory's transmission is that the gears are evenly spaced through out the entire range which takes a lot of pressure off the clutch.
When I finally got enough miles on my XC to try it out a some I thought the clutch was slipping because of the close space ratio's of the gears. Found out quick it was not slipping.

A big + for Victory.

just a thought
dd
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