Mixing oil viscosities

[mellowyellow#7933]

Time to get ready for winter storage. I have two partial jugs of Rotella T6, 5w-40 for the valk & 0-40 for the sled. Can I mix 3 litres of the 5-40 with 1 litre of the 0-40 without any adverse effects? I would hate to end up with a pile of goop in the crankcase if they're not compatible.

[Pete]

Yes and NO.
Mixing oils with the same additive packages is ok.
Mixing different weights is also ok as long as they are both approved by the engine manufacture for the engine and conditions.

I do not think 0-xxx is approved for the valkyrie.

[Momz]

If both jugs have the API label blank (or don't say "energy conserving", then you would be OK to use.

[Gryphon Rider]

"Energy conserving" oil causes clutch slipping.

[Gideon]

You will be fine, both are Rotella T-6. 

[PAVALKER]

As others have said, as long as neither is "Energy Conserving" in the API label, you should be fine.  The lower 0-40 weight would actually give you better initial start up lubrication protection in your colder area I think. 

[sandy]

Our engines call for 10W oil. The 5W and 0W oils are for newer engines where tolerances are tighter.

[R J]

If you plan to replace the engine oil in the crankcase come spring, no problem.    Winter storage, I used to just put in the crankcase of MGM what ever was handy.     Come spring it got changed out for the good stuff and ready for spring riding.

Otherwise I wouldn't recommend it for long distance riding.   You could get by with no more than 150 mile trips.      If you can't fit that in your trips, then push your hand down deep into your pocket and dig out some coins for the same velocity stuff.

My old RAT Truck we threw in it whatever was setting around.     It rattled so loud it didn't make much difference so we just pushed on down the road.    It used more gallons of oil than it did gas,

[Gryphon Rider]

Our engines call for 10W oil. The 5W and 0W oils are for newer engines where tolerances are tighter.

To remove all doubt, from the Valkyrie service manual:

[gordonv]

If the oil is a xW-ww, that large W is for Winter. It is the temp range that the oil weight "ww" holds it viscosity. As the chart that GR posted.

Both the oils you mentioned are 40 weight. One has a temperature range of 0W and the other is 5W. Both are a lower temp than 10W, which is what you need if running the engine in colder temperatures outside.

You can use them IF they are oils you can put into our motorcycles and drive it (no friction modifiers). T6 should mix with T6.

[98valk]

the lowest first # is always best
read Oil 101
http://www.ferrarichat.com/forum/faq.php?faq=haas_articles

   
why only a heavy duty diesel oil should be used

http://www.lngpublishing.com/LNGmagazine/index.cfm
this months issue
http://viewer.zmags.com/publication/e9f4b3fd#/e9f4b3fd/1

see article  Two-wheelers love oil too!

they have a pic of the new goldwing valkyrie as a bonus.
JASO spec'd motorcycle oils are basically the same specs as heavy-duty diesel oil standards.
JASO does not test oils, manufactures pay a fee to JASO and state their oil meets the specs.

see article, another grade for the heavy-duty upgrade?

even better diesel oils coming into the market much better wear protection and using a 10w30 for better mpg.

use technical facts not emotional logic and one will save money on oil and fuel costs.
I have posted my used oil analysis before using 10w30 diesel oil for 8k miles from the hot summer through a cold winter riding with the bike sitting for 1 month, one of the toughest conditions for an oil. UOA came back normal to low wear and oil was still good for continued use, at for least another 2k miles.

http://www.valkyrieforum.com/bbs/index.php/topic,65911.0.html

[PAVALKER]

No your bike won't lock up and burst into flames or wear down prematurely and require a ring job at the next oil change.  Bottom line, you are only adding 1 litre with a slightly different multi grade viscosity to the 3 others you normally use in Your Valk.....and all of them are rated at 40 when it reaches normal operating temp (210degrees f).   Mix em and run it Til your next oil change....you are fine IMO.  But, if you feel like it wouldn't be right.....well, that's ok too....its your bike.

Here is some good reading for ya when ya get the time after sifting thru what everyone posted here already....

http://www.upmpg.com/tech_articles/motoroil_viscosity/

[..]

C'mon guys he stated he wanted TO STORE THE BIKE. Not ride it.

So who cares what oil is in the bike if it's going to BE STORED and NOT ridden.