I just recently bought a Yamaha XT 250 dual sport bike. It is an air cooled 4 stroke. The owners manual says you can use 10w30 up to 95° and then anything above would be 20w40. I bought Royal purple motorcycle 10w30 and I live in Louisiana where the temperature will get up to 95° in the summer. Should I be okay running the 10w30 during the summer or should I move up to 20w40. I hate to waste 3 quarts of Royal purple oil, it's not very cheap. Thanks
Which viscosity?
- Thread starter keithl
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Go up to the 40 weight, especially if you ride hard at all in the heat.
rotella 15w40
Originally Posted By: Roadkingnc
rotella 15w40
+1
rotella 15w40
+1
Originally Posted By: Roadkingnc
rotella 15w40
Or T6. Whatever you prefer.
rotella 15w40
Or T6. Whatever you prefer.
Another vote for Mobil 1, 10W-40 motorcycle oil.
Aircooled engines run hot, so significant viscosity is required.
Use the thin oil during cooler weather, change to the more viscous oil for summer.
Aircooled engines run hot, so significant viscosity is required.
Use the thin oil during cooler weather, change to the more viscous oil for summer.
Originally Posted By: skellyman
Welcome to Bitog !!
My thought is Mobil 1 Motorcycle 10w40.
+2 This ^^^^^
Welcome to Bitog !!
My thought is Mobil 1 Motorcycle 10w40.
+2 This ^^^^^
He says he doesn't want to waste money on RP so why would he get M1 MC 10W-40 which cost just as much. SRT 15w40 is just right.
Rotella conventional is head and shoulders above m1 motorcycle oil. It shears way less and costs less. Forget the mc specific oils unless you are riding some kind of exotic type. Rotella t conventional has been the best performing oil I've used in all of my shared sump bikes.
Originally Posted By: sm00thpapa
He says he doesn't want to waste money on RP so why would he get M1 MC 10W-40 which cost just as much. SRT 15w40 is just right.
I've already bought the Royal Purple 10w30 and just wanted to know if it was okay to use in the summer even though it will be at the limit of what the owners manual specifies. (95 degrees outside temp)
He says he doesn't want to waste money on RP so why would he get M1 MC 10W-40 which cost just as much. SRT 15w40 is just right.
I've already bought the Royal Purple 10w30 and just wanted to know if it was okay to use in the summer even though it will be at the limit of what the owners manual specifies. (95 degrees outside temp)
Originally Posted By: keithl
Originally Posted By: sm00thpapa
He says he doesn't want to waste money on RP so why would he get M1 MC 10W-40 which cost just as much. SRT 15w40 is just right.
I've already bought the Royal Purple 10w30 and just wanted to know if it was okay to use in the summer even though it will be at the limit of what the owners manual specifies. (95 degrees outside temp)
I think it will be ok to use. If it was me I would run the SRT 15w40 in summer and save the RP for the winter. I really don't know the winter temps in your location. So go with what you feel makes you comfortable with the decision. Good luck.
Originally Posted By: sm00thpapa
He says he doesn't want to waste money on RP so why would he get M1 MC 10W-40 which cost just as much. SRT 15w40 is just right.
I've already bought the Royal Purple 10w30 and just wanted to know if it was okay to use in the summer even though it will be at the limit of what the owners manual specifies. (95 degrees outside temp)
I think it will be ok to use. If it was me I would run the SRT 15w40 in summer and save the RP for the winter. I really don't know the winter temps in your location. So go with what you feel makes you comfortable with the decision. Good luck.
20w40 used to be Yamahas standard weight (so only place you can get it), not sure if they still have it. But your better off money wise , just doing the 15w40 diesils. Your really not gaining anything with running the thinner oil.
Originally Posted By: Mackelroy
20w40 used to be Yamahas standard weight (so only place you can get it), not sure if they still have it. But your better off money wise , just doing the 15w40 diesils. Your really not gaining anything with running the thinner oil.
Victory specs it also, so you can get 20w40 oil from Victory dealers too....but a someone who had a Yamaha also, I just ran the 15w40 Delvac or Rotella most of the time.
20w40 used to be Yamahas standard weight (so only place you can get it), not sure if they still have it. But your better off money wise , just doing the 15w40 diesils. Your really not gaining anything with running the thinner oil.
Victory specs it also, so you can get 20w40 oil from Victory dealers too....but a someone who had a Yamaha also, I just ran the 15w40 Delvac or Rotella most of the time.
Originally Posted By: Clevy
Rotella conventional is head and shoulders above m1 motorcycle oil. It shears way less and costs less. Forget the mc specific oils unless you are riding some kind of exotic type. Rotella t conventional has been the best performing oil I've used in all of my shared sump bikes.
You are in Canada he is in LA. Somewhat of a difference for an air cooled engine.
Rotella conventional is head and shoulders above m1 motorcycle oil. It shears way less and costs less. Forget the mc specific oils unless you are riding some kind of exotic type. Rotella t conventional has been the best performing oil I've used in all of my shared sump bikes.
You are in Canada he is in LA. Somewhat of a difference for an air cooled engine.
Last edited:
Originally Posted By: sm00thpapa
He says he doesn't want to waste money on RP so why would he get M1 MC 10W-40 which cost just as much. SRT 15w40 is just right.
He didn't say that re-read the post.
He says he doesn't want to waste money on RP so why would he get M1 MC 10W-40 which cost just as much. SRT 15w40 is just right.
He didn't say that re-read the post.
Originally Posted By: Doog
Originally Posted By: Clevy
Rotella conventional is head and shoulders above m1 motorcycle oil. It shears way less and costs less. Forget the mc specific oils unless you are riding some kind of exotic type. Rotella t conventional has been the best performing oil I've used in all of my shared sump bikes.
You are in Canada he is in LA. Somewhat of a difference for an air cooled engine.
Oh really. Please explain how my summer temps are any different. Since I don't ride in the winter.
And considering I suggested rotella which is thick how exactly are operation conditions any different. What,do I chain up the tires on my bikes and have at er?
Your comment makes no sense. Yes. I'm in canada. My operating temps are similar to his,so please explain how geography has anything to do with oil selection.
Originally Posted By: Clevy
Rotella conventional is head and shoulders above m1 motorcycle oil. It shears way less and costs less. Forget the mc specific oils unless you are riding some kind of exotic type. Rotella t conventional has been the best performing oil I've used in all of my shared sump bikes.
You are in Canada he is in LA. Somewhat of a difference for an air cooled engine.
Oh really. Please explain how my summer temps are any different. Since I don't ride in the winter.
And considering I suggested rotella which is thick how exactly are operation conditions any different. What,do I chain up the tires on my bikes and have at er?
Your comment makes no sense. Yes. I'm in canada. My operating temps are similar to his,so please explain how geography has anything to do with oil selection.
Yeah but in Canada its a dry heat j/k
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Originally Posted By: Robenstein
Yeah but in Canada its a dry heat j/k
Hehehe. Well that's as good as any explanation doog is going to manufacture.
Dry heat,only in the prairies,if you are far from the lakes. Ontario gets some pretty humid weather,enough to melt an engine faster than a 20 grade.
Hehehe
Yeah but in Canada its a dry heat j/k
Hehehe. Well that's as good as any explanation doog is going to manufacture.
Dry heat,only in the prairies,if you are far from the lakes. Ontario gets some pretty humid weather,enough to melt an engine faster than a 20 grade.
Hehehe
Originally Posted By: Clevy
Originally Posted By: Robenstein
Yeah but in Canada its a dry heat j/k
Hehehe. Well that's as good as any explanation doog is going to manufacture.
Dry heat,only in the prairies,if you are far from the lakes. Ontario gets some pretty humid weather,enough to melt an engine faster than a 20 grade.
Hehehe
I had inlaws up in Canada so I know how muggy it gets up there at times. Been in Alaska on quite a few toasty days as well.
Originally Posted By: Robenstein
Yeah but in Canada its a dry heat j/k
Hehehe. Well that's as good as any explanation doog is going to manufacture.
Dry heat,only in the prairies,if you are far from the lakes. Ontario gets some pretty humid weather,enough to melt an engine faster than a 20 grade.
Hehehe
I had inlaws up in Canada so I know how muggy it gets up there at times. Been in Alaska on quite a few toasty days as well.
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