Thread: 30w verses 50w

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Okay, gear oils...................no such thing as 140W either, that scale only assigns W up to grade 85.

Any auto parts store or oil company has up to and including 140w

I can teach you but I can't learn for you: here are the grading systems as defined.....http://www.tribology-abc.com/abc/viscosity.htm

Originally Posted by jerry clayton

Any auto parts store or oil company has up to and including 140w

There are some gear oil suppliers that package their products using the "GL" ratings, i.e. GL4, GL5, and some of the house brands may incorrectly state that their gear oil is equivalent to 140W, which shows that whoever approved their label does not understand the testing methods, IMO, and it might even be reason to question the quality of their product.....

Thanks Bob -----------I hope you know that I was only after grins and giggles!!!!!!!!!!!!!however all those referances are pretty recent(maybe after the advent of syn stuff------------but for as long as I can remember, anytime anyone said 90w, 140w, etc---everybody in the room knew they were talking about how thick it was-------


What I find interesting in todays data papers,etc----is how much they push around the temp standard used for there testing--------seems they just use whatever is convient for their paper--------

Roger--I agree--------however------try talking GL4, GL5,etc and people will think your talking about a new cell phone-talk xxW and everybody will know you mean some kind of oil--------

That is the rub Jerry............colloquialism vs correctness. This is me tilting against windmills, but occasionally I like to interject some accuracy even though reality has given me severe beatings in the past for doing so.

Should I bring up some discussion about the Ford requirement of a 5w-50 grade oil for the Coyote engine?

Might be a good idea because there isn't any way we are going to get people to heat there oils before operation or over cooling them with big aux coolers/air-----------those all alum engines are tight during the winter------


Guy across the street from me-starts up, backs out into street and wide open down the block everytime he leaves------from 100* to -30*---------------doesn't listen---after all he is a professional computer geek--

Speaking of windmills-----------does anyone have a paper that shows the temp drop per kilowatt and how it'll effect the local dew point downwind of the windmill field????????? fog, mist, rain, snow???????????

I've been a Mobil 1 guy since the 70's, ok it was partially because I had a Mobil Station and Mobil gave us free synthetic oil for the sprint car. I use their regular synthetic in street stuff, and their racing synthetic in race stuff...... Not sure what they've done about the flat tappet cam issue though??? Gone to rollers and since then I have to admit I don't pay much attention....

OK, O'Reilly's has ordered me some Valvoline VR-1 in a 10(?w?)-30 after some argument when he told me they only made it in 20-50.

Thanks again, Gentlemen,
Em

We've argued with our engineers at work about oil and they don't understand what they are trying to tell you to run. It's crazy.

Originally Posted by jerry clayton

Speaking of windmills-----------does anyone have a paper that shows the temp drop per kilowatt and how it'll effect the local dew point downwind of the windmill field????????? fog, mist, rain, snow???????????

Not going to further hijack Em's oil thread after this reply, but you'll find that the ambient temp in the immediate area of a wind farm rises about 1C over a decade (all but irrelevant). Those turbine blades are being driven by the wind's kinetic energy and don't add velocity. The effect to ambient is due to increased turbulence, mixing the air from ground level up a couple of hundred feet, much like the fans in orchards and vineyards used to prevent frost damage. Instead of the normal cooling of the earths surface as the sun goes down (radiant loss to the night sky) the mixing negates a little bit of the drop. Now back to the regularly scheduled programming....

Originally Posted by jerry clayton

Speaking of windmills-----------does anyone have a paper that shows the temp drop per kilowatt and how it'll effect the local dew point downwind of the windmill field????????? fog, mist, rain, snow???????????

Jerry, I had that paper but my pedicurist borrowed it and left town to who knows where?
Em

That's OK mello----they mailed it to me-----------