Max oil temps and myths?

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Originally Posted by Quattro Pete
Canola is a much simpler fluid, not loaded with VIIs and additives that may not handle temperature extremes as well. Then there is the time component - is your Canola good for 300 hours of being in service and providing the necessary film strength between moving metal parts?

Maybe we should all just start using Canola in our engines because it's so good.
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Industrial and mobile hydraulics uses rapeseed oil where leaking into the environment is a major issue. Canola is a particular cultivar family of rapeseed better suited for human consumption.

It's not as good as hydrocarbon or synthesized hydrocarbon fluids, but is certainly usable in that part of equipment. EP and VI additives are used. I don't know of any engine lube applications.
 
Originally Posted by Mad_Hatter
Originally Posted by racin4ds
Case in point- my 2005 Ford F350 with the 6.0 diesel engine. These are known to have oil cooler issues and folks on the forums as well as OE Ford TB's say oil temps in excess of 250* is BAD!! Why are we so concerned with what seems to be a relatively mild oil temp in cars? Especially if we're running a quality synthetic? Does 250-300* actually hurt todays oils?

OP...

The Arrhenius rate rule says the rate of oxidation for a lubricant doubles for every +18f increase above operating temp.

Machinery Lubrication

Petroleum Service Co.

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Good info
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