Synthetic oil or not?

Here in deep South, Kawasaki sent a bulletin to their Dealers to run their Semi-syn 20w-50. Because of the intense heat.
 
7394 said:
Here in deep South, Kawasaki sent a bulletin to their Dealers to run their Semi-syn 20w-50. Because of the intense heat.
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Maybe so but I would run a single grade over a multi any day. Less breakdown in these hot air cooled engines. Wish I could find a straight 40w for those over 100f temps.

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slomo
 
Bange said:
SAE 40W!!! If there is, it's winter oil... it'll fry at 100°F
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What planet are you on sir? Winter oil out of a 40w? Straight 40w oil is good till 120F outdoor ambient on planet Earth.

The top chart I posted was from Briggs and Scratton.

Bottom chart was from Kawasaki.

slomo
 
Well, the letter "W" in the SAE classification lends itself more to winter oils... could it be that you didn't want to say SAE 40?(without the W)
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In motor oils, W means winter, yes, 100% true, factual, no doubt about it. W also means a viscosity rating at 0 degrees F.

I see where you are going. SAE is society of automotive engineers. Don't care about those guys. All this is pointless.

To me 30w and SAE 30 are the same animal. It's what I meant a few posts up. I'm with ya'..... :) (y)



Update, I read up on the difference. No 30w oils are to be had. Starting with 30, it's SAE 30 oil. Bange is 100% correct. W is the winter designation. Course I read it off another unaccredited web site for what it's worth. Think Bange and I were talking about the same flavor of mower juice.

slomo
 
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I know you know, but if you ask at a store:
SAE 30W - monoviscous oil for winter (cold weather)
SAE 30 - normal monoviscous oil, positive temperatures (majority)
SAE 30W30 - multi-viscous oil for winter and summer
There are 3 oils with the same viscosity, but they work in different temperature ranges...
Be careful with what you ask not to take a pig in a poke... lol ?
 
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