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Straight 50 weight oil

  • Thread starter Thread starter JEEPRUSTY
  • Start date Start date
"Yet another person that doesn't know about oil."


Example directly below ... V V V


So again, there is no 10W oil. SAE 10 yes, but no 10W.

BTW, there most CERTAINLY IS a 50W motor oil.
Some people know absolutely NOTHING about oil and should stick to using Quaker State. ;)


Daniel
 
In the 70's there was a debate about the meris of straight weight 50 vs 20 50 multigrade


In the Norton riding community. I was with straight 50 until I mought a new Commando that recommended 20-50.

I'll tell you, it is a bitch to kick start a magneto fired Atlas with straight 50 in the oil tank, even if you are a kid who can leg press 800 pounds.

I intend to ride to Phoenix Thursday on my 1000G Thursday. 10-40 will be fine. Suzuki knew about Arizona in 1981 I'm sure. The USA headquarters were in La Mirada after all.
 
I intend to ride to Phoenix Thursday on my 1000G Thursday. 10-40 will be fine. Suzuki knew about Arizona in 1981 I'm sure. The USA headquarters were in La Mirada after all.

That's how I see it. 10-40 was fine even in hot places thirty year go, oil is much better now. It will be fine. We don't need no stinkin oil coolers either.
 
Just a note about mobile 1 oil that may or may not mean a whole lot to this thread. I have a 1998 toyota 4 runner, 4 cylinder engine, I have had it since 40k miles, use it for work, 25-30k miles a year. I only change the oil every 10-12k miles, the truck has 200k miles and the motor runs as quite as can be, runs like new. ;)
 
Just a note about mobile 1 oil that may or may not mean a whole lot to this thread. I have a 1998 toyota 4 runner, 4 cylinder engine, I have had it since 40k miles, use it for work, 25-30k miles a year. I only change the oil every 10-12k miles, the truck has 200k miles and the motor runs as quite as can be, runs like new. ;)

It's a Toyota, that's kinda how they are.
 
"Yet another person that doesn't know about oil."


Example directly below ... V V V




BTW, there most CERTAINLY IS a 50W motor oil.
Some people know absolutely NOTHING about oil and should stick to using Quaker State. ;)


Daniel

You're acting like an A$$ Daniel; quoting me but then changing what I wrote.

I can not find any reference to an SAE W viscosity rating higher than 25. I thought there was 30W but apparently I was wrong about that.

Please post a creditable reference to a 50W oil.


.

oilviscosity.jpg
 


These are ads from retailers, or obscure references without evidence. Please go to the oil manufacturers websites and look up the real technical information via the Technical Data Sheet. Many ad copy folks, as well as people in the general public, don't know the difference between 50W oil and regular 50, thus the common mistake.

Society of Automotive Engineers (SAE) J300 dated 1999 is the current technical specification detailing motor oil viscosity. That chart I posted above is correct. Note: the highest W oil spec classification is 25W. http://www.widman.biz/English/Tables/J300.html

I checked Valvoline.com, castrol.com, pennzoil.com, redlineracing.com, bradpennracing.com, and still can't find any company that makes a 50W motor oil.

I tried to download the SAE technical white paper on motor oil specifications but apparently you have to pay to receive a copy. If anyone has access to this document please send it my way.
 
Last edited:
Hi,

I think it's clear that "SAE 50" is not the same as "50W". It seems that some advertisers and copy writers think that "50W" is short for "50 Weight".

For everything that you ever wanted to know about oil but were afraid to ask:

Here's a great article on motorcycle-specific oil in general.
Here's a 2nd great article, also on motorcycle-specific oil.
Sport Rider Magazine ran a feature awhile back on motorcycle oils as well, and included some testing with detailed results provided. Well worth the read!
Sport Rider "Oil's Well That Ends Well" Part 1
Sport Rider "Oil's Well That Ends Well" Part 2
Richard Wildman (of Richard's Corvair) explains in layman's terms all about grades, viscosity, shear, additives, specs, etc.
Richard's Corvair - Selection of the Right Motor Oil for the Corvair and Other Engines

And, of course, Bob the Oil Guy is a fountain of information.


(I can't believe that I posted in another oil thread.) :o



Thank you for your indulgence,

BassCliff
 
That's how I see it. 10-40 was fine even in hot places thirty year go, oil is much better now. It will be fine. We don't need no stinkin oil coolers either.

I'm considering an oil cooler that smells a little like toasted hickory nuts when hot. Doesn't stink at all. I can't decide whether it's a good idea now.
 
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