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10w-40 or 20w-50 on 03 400ex?

5915 Views 5 Replies 2 Participants Last post by  mud99
Well, I live in Texas and i'm wondering if I should run the 20-50 due to the extreme heat. I'm going to run the Honda GN 4 and am just curious as to which people run on their quads?
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I run full synthetic in my quad. Mobile 1 10w 40
I'm not a fan of synthetic. I'm going to run the Honda GN 4 oil, just curious as to the weight
I ran 10w 40 in my quad year round. If you have any doubt's ask the service dept. at your local dealer they should be able to help.
I ran 10w 40 in my quad year round. If you have any doubt's ask the service dept. at your local dealer they should be able to help.
I did, they said I could run either or. I think i'm going to run 20w 50, gives me more peace of mind in summer riding when it gets into the 100's here
I had a electric fan on my oil cooler that worked really well.

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