lubricatosaurus
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Originally Posted By: Shannow
Originally Posted By: billt460
Link please!
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3930048/Re:_ULV_Oils_-_How_to_Contribu#Post3930048
At first I thought Caterham was referring to the high pressures F1 engine journal bearings experience. Without applying the Navier-Stokes equations in my mind to find the answer, I can't see most tribologists saying viscosity actually goes up under race-conditions temperatures. (???)
"And this (oil) volume is under high pressure that increases its viscosity which somewhat offsets the lowering of the viscosity with heat from shear energy." --- olefud on www.f1technical.net http://www.f1technical.net/forum/viewtop...b9&start=30
Certainly there is some, and maybe a lot in some advanced polymers, increase in film strength as pressures get very high like in IndyCar or F1 engines which would account for the safe use of an HTHS 2.65 oil like this. Film strength without viscous drag is the holy grail.
Originally Posted By: billt460
Link please!
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3930048/Re:_ULV_Oils_-_How_to_Contribu#Post3930048
At first I thought Caterham was referring to the high pressures F1 engine journal bearings experience. Without applying the Navier-Stokes equations in my mind to find the answer, I can't see most tribologists saying viscosity actually goes up under race-conditions temperatures. (???)
"And this (oil) volume is under high pressure that increases its viscosity which somewhat offsets the lowering of the viscosity with heat from shear energy." --- olefud on www.f1technical.net http://www.f1technical.net/forum/viewtop...b9&start=30
Certainly there is some, and maybe a lot in some advanced polymers, increase in film strength as pressures get very high like in IndyCar or F1 engines which would account for the safe use of an HTHS 2.65 oil like this. Film strength without viscous drag is the holy grail.