Oil Viscosity

Vegas Street Rider · 08-06-2016, 01:47 PM

I have my GZ in the shop to have some new tires mounted and the owner/mechanic (Suzuki certified) and I were discussing the heat here in Las Vegas. I told him I ran 20/50 viscosity oil in my GZ during the summer months to protect the engine in the plus 100 degree temps we incur. He said he uses a 50/50 blend of 10/40 and 20/50 which essentially gives him a 10/50 range. Does this sound right? I was always told not to mix different viscosities. Would like to hear from someone learned on the subject.

Water Warrior 2 · 08-08-2016, 05:24 AM

You can't do any damage by mixing different oil viscosities so don't worry. Make it easier on yourself and just use Rotella 15-40 dino oil. It is a good oil and Jaso certified. It is cheap and works well. Had it in 2 different Suzukis and they really liked it.

burkbuilds · 08-26-2016, 08:35 PM

I'll second WW's recommendation. The Shell Rotella is really good oil. I've used it in all my bikes over the last 8 years and I've had no oil related issues. I put 44,000 miles on a Vulcan 500 in 2 years and that's all I ever used in it.

blaine · 08-26-2016, 09:48 PM

I will 3rd it.....I have used Rotella-T for years in all my bikes......From high reving sport bike engines to my v-twins.

Vegas Street Rider · 08-27-2016, 12:06 PM

Thanks for the responses. I will try the Rotella.

08-06-2016, 01:47 PM	#1
Vegas Street Rider Senior Member Join Date: May 2015 Location: Henderson, NV Posts: 1,105	Oil Viscosity I have my GZ in the shop to have some new tires mounted and the owner/mechanic (Suzuki certified) and I were discussing the heat here in Las Vegas. I told him I ran 20/50 viscosity oil in my GZ during the summer months to protect the engine in the plus 100 degree temps we incur. He said he uses a 50/50 blend of 10/40 and 20/50 which essentially gives him a 10/50 range. Does this sound right? I was always told not to mix different viscosities. Would like to hear from someone learned on the subject. Login or Register to Remove Ads
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08-26-2016, 08:35 PM	#3
burkbuilds Senior Member Join Date: Mar 2009 Location: Shannon, Georgia Posts: 1,268	I'll second WW's recommendation. The Shell Rotella is really good oil. I've used it in all my bikes over the last 8 years and I've had no oil related issues. I put 44,000 miles on a Vulcan 500 in 2 years and that's all I ever used in it. Login or Register to Remove Ads
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08-26-2016, 09:48 PM	#4
blaine Senior Member Join Date: Feb 2010 Location: P.E.I. Canada Posts: 3,784	I will 3rd it.....I have used Rotella-T for years in all my bikes......From high reving sport bike engines to my v-twins. __________________ If at first you do succeed, try not to look surprised.
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08-27-2016, 12:06 PM	#5
Vegas Street Rider Senior Member Join Date: May 2015 Location: Henderson, NV Posts: 1,105	Thanks for the responses. I will try the Rotella. Login or Register to Remove Ads
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08-08-2016, 05:24 AM	#2
Water Warrior 2 Senior Member Join Date: Dec 2006 Location: Squamish B.C Canada Posts: 11,409	You can't do any damage by mixing different oil viscosities so don't worry. Make it easier on yourself and just use Rotella 15-40 dino oil. It is a good oil and Jaso certified. It is cheap and works well. Had it in 2 different Suzukis and they really liked it.
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