Its the first summer ive had the 06 Katana, right now the bike has 10w40 oil in it but ive heard mixed reviews on a new Castrol r4 oil that is only 5w40...should I stick with the 10w40 or has anyone had any experience with the Castrol oil? Thanks
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I've run 5w-40 Rotella t6 rear round for 3 years now, and done somewhere around 70k miles in that time. Granted, that's in CA...only ridden below freezing a handful of times becuase it just doesnt get that cold. Been out in 105Ž°F and bike seemed ok. Didnt love the heat, but don't think the oil viscosity had anything to do with that. (Bike was running lean at the time)
If it's full synthetic, it should be fine for high temps, not sure about really cold ones though.1998 Katana 750
1992 Katana 1100
2006 Ninja 250
2006 Katana 600 RIP - 130k miles
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Low viscosity is good for lower temps, higher viscosity for higher temp. I bump mine up for the summer, it can get to 130* here in the summer."I'm sorry, I didn't mean to upset you when I called you stupid. I thought you already knew..."
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if I stick to the same numbers in my manual, does it matter if I get oil that can be used in a car or does it have to be specifically for motorcycles, just find the price is so much moreBatman
1985 Suzuki GSX750S Katana
2006 Suzuki GSX750F Katana
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