Oil (yes, that question again)

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Oil (yes, that question again)

12 Apr 2015 07:09
#667621
I hope I won't step into a beehive or anything here, since it seems most bike forums has debated this topic to death, so I'll be very specific since a search didn't help ;)

Is 10w-40 the correct choice for my KZ700 in temperatures ranging from 5 to 30 degrees celsius (I think that's 40-85 f)? 90 % of the time it will be in 15-20 degrees I ride though.
-[ KZ700-A1 '84 ]-

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Re: Oil (yes, that question again)

12 Apr 2015 07:11
#667622
TheForumTroll wrote: I hope I won't step into a beehive or anything here, since it seems most bike forums has debated this topic to death, so I'll be very specific since a search didn't help ;)

Is 10w-40 the correct choice for my KZ700 in temperatures ranging from 5 to 30 degrees celsius (I think that's 40-85 f)? 90 % of the time it will be in 15-20 degrees I ride though.

That's the weight I run.

Bill
www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300

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Re: Oil (yes, that question again)

12 Apr 2015 07:45
#667628
I've run Castrol GTX 20 50 in everything since 71. However I was out of the loop from 98 to 13 on my Z1. I've been using it now with no ill effects. Clutch still works good. I may need a new one soon due to age, not the oil.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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Re: Oil (yes, that question again)

12 Apr 2015 08:57
#667634
But is the weather as ”cold” where you guys are at?
-[ KZ700-A1 '84 ]-

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Re: Oil (yes, that question again)

12 Apr 2015 09:04
#667636
99% of my rides are between 65 and 85 so I feel 10/40 is best ...... for my area anyway and yours too.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
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Re: Oil (yes, that question again)

12 Apr 2015 13:50
#667672
I always ran 10-40 for winter (temps about 30 - 60F) and in the summer I would blend 10-40 and 20-50 half and half for temps in the 60 - 90F range.
1979 KZ-750 Twin

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