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Mobil 1 4T synthetic 10w-40

10K views 9 replies 10 participants last post by  goa360 
#1 ·
Hello everyone,

I am currently running Mobil 1 4T 10W-40 fully synthetic in my 07 R1.

Manual says to use 10W-30

Is 10W-40 acceptable?
 
#4 ·
You're good, I used Mobil 1 MX4T 10-40 for years (Mobil1 15w50 car oil too) but switched over to Amsoil, a little cheaper and more conveinient (shipped to my door)
 
#9 ·

I am currently running Mobil 1 4T 10W-40 fully synthetic in my 07 R1.

Manual says to use 10W-30

Is 10W-40 acceptable?

The manual should list a range of weights dictated by outside ambient temperature. I don't have a 2007 manual in front of me, but I'm almost certain it lists 10w-40 as a recommended weight.

Regardless of what the service manual says, there must be like a billion people using 10w-40 motor oil (motorcycle oil that is) in their bikes.




 
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