So how does Rotella 15-40 hold up to a turbo-charger spinning at up to 250,000 rpm at over 1000° F?
Makes 9-13 thousand seem pretty slow and considerably cooler IMO.
I do understand your point about not putting a lower grade oil in a racing engine... but I think you underestimate the amount of abuse that a decent oil will prevent. The bottom dollar crap is that...bottom dollar crap...fair enough
Decent oil is pretty good at preventing damage in extreme environments...I'd guess more extreme than a bolt reciprocating at...1200 spm? Is that a fair rate of fire on a squad MG?
It holds up surprisingly well while its circulating through an oil cooler, but when the owner forgets to allow the turbo and engine to idle down for a few minutes after use which in turn cokes the oil (Burns) and renders it properties useless.
Firearms don't have oil coolers.
It holds up surprisingly well while its circulating through an oil cooler, but when the owner forgets to allow the turbo and engine to idle down for a few minutes after use which in turn cokes the oil (Burns) and renders it properties useless.
Firearms don't have oil coolers.
You know what I saw being used pretty much exclusively during my many machine gun adventures in the US? WD-40... I think lube choice is less important than some seem to think. Just having some, of any kind, is usually good enough.
If you run your gun hot enough to burn the oil right off there isn't a lube out there that can help...
Actually they added the Gasoline to the crankcase of aircraft engines right before they shut them down. Lowered the viscosity of the ( non-multi-grade ) engine oil so that it would start. At an idle the gasoline would evaporate from the 30 or 50 wt oil. By operating temp the oil was back to straight oil...legend has it anyhow.
But that is pretty funny..lubing an MG with gas / oil mixture... engine oil burns insanely hot. Ran Frac heaters for a couple months. One of those nasty things was rumoured to produce 53,000,000 BTU in a 24 hour period...take water from sub zero to 30° C in one pass...at 2m3/min. Uselss info for the most part, still crazy numbers.
Graveyards...
We ran Wright 9 cylinder radials on the Tracker Aircraft, and they had oil dilution systems built in for cold weather starting. Cylinders were about 200 cubic inches each, so a little bit of friction to overcome. The system pumped gas from the tank into the crank case.
Greasy ugly old pigs, the running joke was that you checked the fuel, and tanked off the engine oil after every flight, as much of it ended up slung everywhere.
Turbos get hot, and you can bugger them faster than usual, if you make it a habit to run the engine hard, and not let things cool down a bit before shutting down.