in general, what % of engine heat is generated by viscous shearing, combustion or friction? Anything else terminology wise? Is viscous shearing a component of friction which is causing the heat, and heating up the oil which is heating the block ...
I always thought that most of the engine heat is from combustion ... viscous shearing was mentioned in one the recent threads on this forum and made me wonder about the percentages.
my final question and as much as I enjoy it,
it is not my intention to turn this into thick vs. thin discussion
some will be assimilated eventually
However, if you were NOT concerned about any other oil functions/qualities EXCEPT heat generation (viscous shearing? and friction) and heat transfer (e.g. away from the engine to oil cooler or the block), how does lower viscosity oil compare to higher viscosity oil? overall which oil will keep the engine cooler? I've read that thinner oil causes less heat but thicker oil will carry more heat (away) so I'm not sure about overall impact!
I always thought that most of the engine heat is from combustion ... viscous shearing was mentioned in one the recent threads on this forum and made me wonder about the percentages.
my final question and as much as I enjoy it,
However, if you were NOT concerned about any other oil functions/qualities EXCEPT heat generation (viscous shearing? and friction) and heat transfer (e.g. away from the engine to oil cooler or the block), how does lower viscosity oil compare to higher viscosity oil? overall which oil will keep the engine cooler? I've read that thinner oil causes less heat but thicker oil will carry more heat (away) so I'm not sure about overall impact!