Sorry to bring up an old post.
I have a problem following an oil change. Also, i want to ask what is the correct method to check the engine oil level?
My bike has a main stand.
Some background info: I had it overfilled by a stealership (did coolant change also) and noticed it at home as the level went past the sighting window. Slight foaming appeared also on the sighting window while the engine was idling (these idiots!). My estimation is of 400-425 ml overfill based on what remained in the bottle, the official fill quantity and the quantity on the invoice.
Checking the level by "5min idle - stop - check after 3 mins" procedure revealed that oil level was above the window. In fact, after 1 min waiting it was already reaching the max level.
After this check I drained 400 ml of engine by loosening the drain blot and watching the oil level dropping through the window. I tightened the bolt when I saw the level was 1 mm below MAX level.
Some verification I performed after draining the 400 ml out:
1. The method that i use is the one according to the user manual: with the engine cold at ambient temperature (not started since a day or so), start the engine and let it idle for 5minutes, stop it, let the oil gather down for 3 mins, check the level (bike on main stand).
By this method the oil level is 1mm below MAX level mark and this seems to me the right way to do it.
2. Checking the level while the bike is cold (not started at all) means engine oil level shows to be above max level, at the top of the window. I imagine that "cold start-idle-stop-check" sequence leads to oil being not fully drained yet when checking the level?
3. Checking the oil level after some ride of 50 km or so and after letting it sit for the same 3 minutes leads to oil level being over the window (not visible).
Moreover, after such a small ride, the top cap leaked slightly, like a drop spread around the cap. I stopped and re-seated the rubber seal, the leak is now barely visible. After sitting for an hour it evaporates by itself. The cap was surely tightened enough both before and after stopping. No foaming appeared on sighting window after removing the 400 ml.
What is your opinion based on the above? Which is the correct method? Is it possible to be still overfilled? Should i ignore hot oil level? Any info or advice you may have are welcomed.
I bought the bike used (2014 manual model), with 11000km on the clock, i have been riding the bike for 2000 km, oil level was visible with bike cold sitting for a few days. I had no drops near the top cap until stealership visit.
I really like the bike, it's the perfect machine, a blend of touring and sport.
Please let me know if any aspects need to be clarified, i tried to describe the situation as detailed as possible. Thanks.
Engine oil used is honda 10w30 factory spec, the black bottle, JASO MA spec.