Re: SpeediFour and SpeediTwin oil ratio?

[RICHARD A. WHITE]

So the question then is this….how much less oil can one use WITHOUT the risk of "smoking" a motor due to lack of oil? If the motor is well used, one could surmise it might need a tad more oil, fresher motors could do with less. I think this brings our " CORRECT OIL RATIO" debate to the forefront in that how can one person with no professional knowledge of lubricity factors, or the original manufactures intent for lubrication have any idea how much less oil we can get away with using. I have watched technical videos showing that on some applications of motors with bushings, not bearings, the thicker oil actually is used to "fill" the gap, thus aiding in sealing the crankcase. Thinner synthetic oils may not work that way, and of course would cause irreparable damage to our motors.

I understand many currently use less oil than what the manufacturers recommend, and everything seems fine. My question is this, has anyone, or I guess how many have done the litmus test of running your motor on proper amount of modern TC 2 cycle oil, noting the amount of smoke, then ran the same motor on the same amount of synthetic, to see if there is a difference in the amount of smoke? I have not. Is it possible that trying to lessen the amount of oil is a knee jerk reaction? I don’t know. But it is a new season and I am going to need to buy some more oil so I might just do that. I would even be willing to try it with my 1914 Evinrude since I generally run it very heavy on the oil. Would this prove or disprove the theory of less synthetic is better? Probably not but as Tubs said, we must be prudent and cautious lest we lose our ability to run our toys…. I will try this experiment and advise, but it will take a bit, I will take video, but it would need to be on a calm day so as not it skew the test….

Regards

Richard

http://www.richardsoutboardtools.com
classicomctools@gmail.com