I may be deficient in my searching but, the only related comment I could find was in a covid vaccine thread(?). When getting into the v boost rpm range, does anyone else get the low oil light coming on?
I disagree with that: "if some is good more is better!" That's definitely not the case. Overfilling the crankcase costs you horsepower, through crankshaft drag through the excess oil. Overfilling the crankcase unnecessarily aerates the oil, costing you lubrication properties. Every VMax I've ever-ridden, I've seen the oil light. The engine is not "starving for oil!"The stated oil capacity on a gen 1 Vmax is 3.6 quarts when you change oil and filter. I just put 4 quarts in it. I never seen the oil light come on. If you're a stickler for the rules, stick with the 3.6 quarts and see the light come on under hard acceleration. If you don't like your engine starving a bit for oil, put the rest of that 4th quart in it and you'll never see it again.
I disagree with that: "if some is good more is better!" That's definitely not the case. Overfilling the crankcase costs you horsepower, through crankshaft drag through the excess oil. Overfilling the crankcase unnecessarily aerates the oil, costing you lubrication properties. Every VMax I've ever-ridden, I've seen the oil light. The engine is not "starving for oil!"
As the wife of POTUS #40 famously-said, "Just Say No!" The required amount of the proper grade of oil is a good-thing, but overfilling is definitely a case of "too-much of a good thing."
11 Symptoms of Too Much Oil in Your Car (and What Can Go Wrong) (oards.com)
the hero none of us knew we needed.
Oil is a fairly complex subject with some nice names attached such as kinematic viscosity at running temp, I.E. what you read on the front of the can, after shearing takes place. I think the yanks discovered all this stuff hence it's usually SAE approved. It does many duties in the engine such as grabs heat and throws it around the engine casings to promote cooling down, it also gets temperature spikes hence we still have mineral oil versus synthetic, large and small molecules for taking up engine play, different multigrades, the list goes on.Generally speaking, it is rare to find potential issue with something the gentleman from South Florida brings up. But since I'm the aforementioned four quart kind of guy, I've been pondering this for a bit. A couple of main points trigger me to respond here:
1) I don't know what the surface area of the oil in the sump is, or how much 4/10 of a quart would raise the level there. Certainly a half an inch or less - 12 mm for the Europeans among us. I don't imagine that's going to be a detectable problem either with regard to lost horsepower from the crank whipping through it or aeration of the oil as a result of that action.
2) With the engine running, a significant amount of that oil is no longer in the sump but distributed throughout the lubrication system. The sump level varies, and under normal operation, 100% of the oil would never be down there.
3) I don't spend my days at high rpms, but if I did, I would definitely want to have extra oil supply available. The last thing I would want would be for the pickup to start sucking air. Sustained high RPM cruising is worst case for your lubrication circulation and that extra half a quart could be the difference between a problem or no problem.
... Sorry, just thinking out loud
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