Oil weight preference - Suzuki Volusia Forums : Intruder Volusia and Boulevard Forum
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post #1 of 27 (permalink) Old 03-20-2016, 11:42 PM Thread Starter
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Oil weight preference

So I just picked up a 2006 boulevard c50t and as I do with anything used, I plan to change the oil. Mileage is only 4874, but I have no knowledge of the bikes history or maintenance. So back on point, I live in Ohio. The summer goes from mild(mid 70's) to pretty toasty(around about 100) throughout the week. Just want to be sure that I use an oil that is going to work well with these temperatures.

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post #2 of 27 (permalink) Old 03-21-2016, 12:16 AM
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WELCOME TO THE VR!!!

If you look in your owners manual - if you got one with the bike... it shows a temperature/viscosity recommendation.

Many go with the standard 10w40 as recommended but others go with 15w40 or 20w50 for the warmest weather.

Mobil 1 for motorcycles is a popular choice in either viscosity for synthetic and Rotella T for the 15w40 in a standard type oil.

This is the Rotella to use. click HERE the jug looks like this

There are a few others. as well... do a search for oil threads....


and don't be offended if others post someone beating a dead horse in a subsequent post... they - the posters who have been around this forum for a while tend to go off on the newbe's who ask about oil.... ALL IN FUN THOUGH...

In any case, DO NOT use an oil that is rated as ''energy conserving'' or ''resource conserving'' - you will ruin your clutch. That would be any oil with the ''starburst'' ring on the front of the container that says ''for gasoline engines''.

Most diesel oils are ok for our bikes.

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post #3 of 27 (permalink) Old 03-21-2016, 12:16 AM
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I run 10w-40 year round,gets around 100/105 here
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post #4 of 27 (permalink) Old 03-21-2016, 04:55 AM
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I run Mobil1 15w50 year around here in Pa.

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post #5 of 27 (permalink) Old 03-21-2016, 06:17 AM
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Shell Rotella T 15-w-40 in my intruder. Never use car oil!
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post #6 of 27 (permalink) Old 03-21-2016, 07:00 AM
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shell

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Originally Posted by JPJ61 View Post
Shell Rotella T 15-w-40 in my intruder. Never use car oil!
FWIW: I used the Rotella last time I changed and couldn't be happier.
Smoother shifting plus cheaper.
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post #7 of 27 (permalink) Old 03-21-2016, 07:42 AM
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Rotella T is a good, inexpensive alternative to more expensive Motorcycle specific oil. But it has a drawback in that it is not formulated to withstand the massive molecular shearing that occurs in the shared bath transmission of the bike. The base oil viscosity degrades quickly as you ride and you end up with a 'thinner' oil than what went in the crank case. Your service interval using that particular oil will be shorter, meaning you'll end up changing the oil twice as often. Any savings realized will be offset by the more frequent service intervals.

As for oil weight? That is entirely your preference. 10w40 is recommended, but you can safely run 15w40, 15w50, 20w50 in the same bike. Brand is generally irrelevant so long as you purchase oil formulated for motorcycle use (JASO MA/MA2).

Enjoy the ride.

Current Bikes -->
-1969 Indian MX125 -10-2009 to Present
-2014 Honda CTX1300 - 05-2015 to Present

Past Bikes ----->

-1973 Yamaha RD350
-1991 Harley Sportster 883 XL
-2000 Yamaha XV125
-2003 Piaggio Fly
-2004 Suzuki LS650 - 04-2005 to 07-2008
-2005 Boulevard C50 - 07-2008 to 5-2012
-2012 Vulcan 900 - 05-2012 to 05-2015
-2008 Yamaha FZ6 - 11-2008 to 04-2017
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post #8 of 27 (permalink) Old 03-21-2016, 09:03 AM
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Your best option is Mobil1 15w50.
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post #9 of 27 (permalink) Old 03-21-2016, 11:18 AM
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Quote:
Originally Posted by Skrapiron View Post
Rotella T is a good, inexpensive alternative to more expensive Motorcycle specific oil. But it has a drawback in that it is not formulated to withstand the massive molecular shearing that occurs in the shared bath transmission of the bike. The base oil viscosity degrades quickly as you ride and you end up with a 'thinner' oil than what went in the crank case. Your service interval using that particular oil will be shorter, meaning you'll end up changing the oil twice as often. Any savings realized will be offset by the more frequent service intervals.
That is actually wrong. I did an oil analysis with rotella and the viscosity was still in spec after 4700 miles on the oil. I could go farther on it, but my iron was a little above normal.
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post #10 of 27 (permalink) Old 03-21-2016, 12:36 PM
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Curious. Because the published UOA's found on various forums for the 15w40 tell a different story: Kenematic Viscosity is found to be below expectation. YMMV

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Current Bikes -->
-1969 Indian MX125 -10-2009 to Present
-2014 Honda CTX1300 - 05-2015 to Present

Past Bikes ----->

-1973 Yamaha RD350
-1991 Harley Sportster 883 XL
-2000 Yamaha XV125
-2003 Piaggio Fly
-2004 Suzuki LS650 - 04-2005 to 07-2008
-2005 Boulevard C50 - 07-2008 to 5-2012
-2012 Vulcan 900 - 05-2012 to 05-2015
-2008 Yamaha FZ6 - 11-2008 to 04-2017
-2006 Star Virago - 05-2011 to 06-2017


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