What are te temp for sae 20w 50 yamaha lube? Thanks

Yamalube is no good, buy a good oil for your bike! Motul, Silkolene, Bel ray 10W-40 is good for the bike.

http://www.yamaha-motor.com/Yamalube...be_Catalog.pdf

I run 20W-50 in the summer when it is 75F to 100F, otherwise switch to 15W-40 and 10W-40 for a bit cooler(40F-75F). Winter I never use the 20W, only 10W. Most of it is all synthetic so flow rate doesn't get as slow as with regular dino oil in the colder temps.

Use whatever flavor you want

I have to take issue with Yamalube being no good. Of course, compared to modern synthetic, which I use exclusively, it won't measure up. My XT has always had Yamalube 4 stroke from new in 86. Engine is clean as a whistle, compression measured 170 lbs on a new compression tester. Engine pulls like a tractor, especially since I put on the Zeeltronic programmable ignition.

I now use Amzoil 10w40 synthetic. I trust it is doing the job as I expect it to.

My current top end rebuild on my 84 Xt is going well. Engine is clean inside despite being idle for 25 years. PO had put in what smells like 90 weight gear oil in it. He overfilled it and it looks like he smothered it as the top of the piston, valves and combustion chamber was coated with thick oil. I suspect this is why he parked it. Hurray for me. I've had the bike for 10 Plus years after purchasing it for $100.00 as a parts bike. Once I got in the XT600 mode again I discovered I had a gem of a bike to go along with my 86. Once I get the top end reinstalled after a hone, new rings, valve job and all rubber products replaced this bike will be almost road ready. Need tires, tube and chain.

I am using the aftermarket Ignition from New Zealand on this bike because I have it. Once broken in we'll compare the 84 to the 86 performance as they will be geared identically at 3 to 1. If there is a major difference in performance, we'll swap ignitions around and test again. This should be an acid test on the Zeeltronic ignition. I am sure if we see the ignition to be the difference in performance and the difference is considerable we'll most likely get another zeeltronic and use the hyperpak as a spare.

Steve

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'84 XT600 is now bored to 2nd oversize and new OEM pistons and rings installed. No more smoking.

I used Yamaha Lube (mineral 20w50) for most of my journey around the world on an XT600Tenere - 252.000km - and I still use it sometimes in my Africa Twin today ... but I change the oil regularly every 5000km ... just my 2p worth of advise ... saludos desde Bolivia mika

Yeah i agree its wrong to name yamalube no good, what i ment is that there is better products in the market. And yes its very importan to change the oil often and once a year if you dont ride much.