Mixing Oil Grades OK?

[James Burleigh]

I changed my oil a week ago and the red oil light went on 'cause, well, you're supposed to fill it up apparently and everything. Who knew.

Anyway, the light went out but I could use a top off. So I sent Fang to the Yamaha dealer to pick me up some 20-40, and she came back with 20-50, with the dealer apparently saying they're discontinuing the 20-40.

Do I need to worry about mixing the two grades?

Jb

 

[Warchild]

No, you don't.

And Yamaha indeed no longer markets the Yamalube 20-40w. They are joining the rest of the world with 10-40w and 20-50w viscosity.

 

[twowheelnut]

All I've ever run in 20-50.

 

[madmike2]

Oh no! The engine is going to explode and the final drive will lock up...probably while you are splitting sharing lanes on the Bay Bridge!

Actually, Yamaha has changed to 20/50 oil because they are worried about the French detuned engines that may creep into North America during the '08 model year. The change in viscosity is needed to lubricate the upper end (including the newly designed valve guides) and to keep the heads cooler because the restrictor plates on the injectors can cause the engines to run leaner, thus hotter.

If I were you, I wouldn't put much stock in whatever my alter ego just posted!) :lol:

 

[wheatonFJR]

Oh no! The engine is going to explode and the final drive will lock up...probably while you are splitting sharing lanes on the Bay Bridge!
Actually, Yamaha has changed to 20/50 oil because they are worried about the French detuned engines that may creep into North America during the '08 model year. The change in viscosity is needed to lubricate the upper end (including the newly designed valve guides) and to keep the heads cooler because the restrictor plates on the injectors can cause the engines to run leaner, thus hotter.

If I were you, I wouldn't put much stock in whatever my alter ego just posted!) :lol:

I'm gettin' confused MM...am I supposed to listenin' to yer BIG letter voice...or yer little letter voice??

 

[madmike2]

Yes!

 

[Warchild]

Let's get Mike's doctor to up his meds a little bit more..... :lol:

 

[SockMonkey]

I'm so confused!! My dealer recommends (and indeed uses) Castrol GPS 10W-40. According to my "Service Advisor" and despite what the owners manual says, he says that Yamaha has thumps-upped this oil for the FJR (and most all of their other 4 stroke machines). Well, okay... (And if your Service Advisor tells you this then it must be right. Right?)

 

[Violione]

Wow, you actually believe what a service adviser recommends? Damn, if any of the ones in my area (5 in all) said "nice day, isn't it"?", I'd half to look out the door to see if the sun is shining or not.

10W-40 is great, 20W- 50 is great, and if you ride in the great white north 5W-30 will do the trick. I have even thought about Mobil 1's 0W-40, as long as it meets the API service requirements SE, SF, SG type or higher, but not oils that have the CD diesel specification or oils labeled "ENERGY CONSERVING II" (has the stared circular service grade label). BTW - Wally World probably has the best prices and selection of oil out there, at least in my part of the country. IMHO

 

[James Burleigh]

Thanks, all. I was afraid this thread was morphing into a NEPRT.... Jb

 

[otrfjr]

Holy Crapsickles, Batman! Won't that cut into their profit (scaring as many as possible into believing that it's 20-40 or bust--as in busted engine)? What if it still says 20-40 in my owner's manual? Oh, the humanity of it all.

And Yamaha indeed no longer markets the Yamalube 20-40w. They are joining the rest of the world with 10-40w and 20-50w viscosity.

 

[James Burleigh]

Holy Crapsickles, Batman! Won't that cut into their profit (scaring as many as possible into believing that it's 20-40 or bust--as in busted engine)? What if it still says 20-40 in my owner's manual? Oh, the humanity of it all.

We're all f**ked.