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I can't imagine that oil is expanding that much under heat if at all. I think waiting to check after filling then running the engine has more to do with the oil settling in the pan.
Ok how about this test you can do and let me know the results.I can't imagine that oil is expanding that much under heat if at all. I think waiting to check after filling then running the engine has more to do with the oil settling in the pan.
Ok how about this test you can do and let me know the results.
Cooling system is closed system filled with coolant which gets hot, what is purpose of expansion tank?
All valid points but we are trying to fill oil to the proper level thus trying to eliminate possible problems caused by overfilling. In beginning I followed amount recommended by manual. After job was done and after bringing bike to the operating temp and checking for leaks bike would get turned off. 30 minutes later oil level was always past upper mark and covered sight glass completely.This happened twice, after that I started doing what I described previously!We're talking oil, not water.
Synthetic vs mineral oil, additives , etc. I don't know if its reliable to google thermal expansion, come up with a number and quote it. In that example though, who's even to say 179cc of expansion is significant? Keeping in mind that the oil when the engine is running is being pumped through the engine.
More of the oil draining into the pan while the engine is off would very likely be more than that 179cc.
I think the actual problem is people overfilling above the max line, either inadvertently or by following a misguided filling practice.
I wonder if the time to drain would be effected if the bike was on a rear or side stand, or to a greater degree of minutia, if the bike was on front and rear stands thereby being level.
Speaking of overfill, I just did my first oil change and only got 3 quarts in before I checked the level and it was way over. I had to drain out some, so overall, my bike only took 2.7 quarts. I warmed it up pretty decent before draining, however that thick 15-50 must be sticky.
Warming it up first is NOT proper procedures on the V4.
The V4 operates with a dry sump style system and multiple pumps. Proper procedure is to let the bike fully cool down before doing any draining. If you warm up the bike, a lot of the oil is still up in the motor and does not drain out.
This is the main reason why so many people overfill their V4 motor Ducatis. Conventional motorcycle wisdom does not apply to them. If you change the oil with the motor warm, you will not be able to accurately measure the amount you should be putting in. Furthermore, a lot of people are firing up the bike to get it warm after changing the oil and immediately checking the sight glass, which will read very low when the bike is warm. They throw more oil in and it is way overfilled at that point.
Proper procedure for the V4 is to let the bike fully cool (dealerships wait an hour if you rode it in) and then drain the oil. Ideally, pop the drain plug off and let it drain overnight. Fill it with the proper amount (checking with sightglass), fire the bike up, let it warm up to 3 bars or so, then shut it off. Wait another hour or so and look at the sightglass to check the oil level, top off if necessary.
It's lame but you just can't bang out a 15 minute oil change on these bikes like most others.
That is the second dumbest oil change procedure I have ever heard of. The first was my Aprilia SXV 550 which I blew up in a race!