Just wondering if 10-40 oil is too thick for the motor in winter. I want to run the right weight oil but I don't want too thin either cuz I'm hard on $hit, or is 10-40 just fine?... It's about 5 below outside right now and will for sure be 10 below in the morning then warm up to no warmer than 30 all day and this is typical for all winter..... sometimes it's a little warmer and not much colder. I don't like to ride at all if it's colder than 20 and it's not gonna get no warmer than 40 till spring so someone who knows what's best let me know.. thanks.

 

In the manual it says 5-30 is good from 60 to -20 below 0. 10-40 is only good to 0.

 

The oil is fine, if you keep the bike inside and never has cold starts below 60 degrees I would stick with 20/50 but if it's cold I would not use anything thinner than 10/40 the oil 5/30 is used for most break-ins 95% all shops are going to say 20/50 summer 10/40 winter.

 

will 10/40 oil hirt the motor if its 18 degrees outside???

 

That's what I need to know. I said my temperatire conditions, and I need to know what's best for my motor. I do long WOT shots across the lake too if that makes a difference... Probably just stick with the 10-40?

 

well thats all i run all year round, all i do in the winter if i know i'm just gunna be goin down the river i just put a piece of tarp infront of my rad to keep the motor warm

 

Thanks for the replies... Anyone else??

 

i always let mine warm up, but the fan never comes on, you'll b there like 15mins waitin for that

 

I just back from riding a little bit. I don't have a fan but I ALWAYS let it warm up for a long time before riding. So 10-40 is ok... Thanks.

 

and check ur coolant