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Checking engine oil level from dipstick - warm or cold?

16K views 15 replies 6 participants last post by  math2900  
#1 ·
For 2019 Odyssey Elite, the owners manual is not very clear on whether to check oil levels with warm or cold engine. The manual just says to "wait 3 minutes" after filling the oil before checking - but does not mention whether to check on cold or warm engine.

Right now, my oil level is at the max on cold engine, and a few millimeters above max on warm engine - so I am trying to figure out if I should siphon out some oil or not. Any guidance is appreciated. I filled about 6.7 quarts (as suggested in the manual), and did swap out the filter as well - but its quite hard to exactly measure the .7 quart part since most oil containers only have 0.5 quart increments on the side.. so its possible I may have slightly overfilled if the level are supposed to be measured on warm engine.
 
#2 · (Edited)
6.7 quarts? o_O ‼ I hope that's a typo! From your 2019 Owner's Manual:
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I read it as check when warm- as in "every time you refuel", implying you drove to the gas station.
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If it was 5 and about .7, I wouldn't worry about that little bit. If it was 6+ then yes, siphon it out!

Edit- I see now where you reference the "wait 3 minutes"-

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Since the engine was "hot" at the start of the oil change, now we run the engine a few minutes- we are supposed to check the oil with the engine warm. (Although I doubt there would be a great difference between checking cold vs. hot- check it yourself in the morning to see what the difference is!) :p
 
#3 · (Edited)
Yes - sorry that was a typo. I mean 5.7 qt not 6.7.

Thanks for the info. It is not super clear from the manual, but it seems that warm is what they recommend.. I agree its a very small difference and likely will not cause any damange; but I am a bit OCD, so I will siphon off about a pint to get below the top cross hatch with warm engine.
 
#4 ·
That's great you are checking the oil, please continue on a regular basis and check for leaks once in a while.
As for removing a pint, can you attach a picture of the dip stick with the oil level on it.
There is a little wiggle room on above and below the hash marks.
Honda sets the cross hatch area as terrian is not always flat on where we drive, so if your going up pikes peak on add, your still safe.
Same as parking on a steep driveway I guess you can say also.
 
#8 ·
I would rather be that much over the full mark rather than that same amount under. (A little more leeway if somehow you start LOSING oil.) :)
My preference.
The majority, on this site, push Honda recommendations and fluids to the limit!!
Happy Thanksgiving.
Buffalor4
 
#9 ·
Makes sense to me. I was about the same amount above the line before. But this is a bit confusing to me because I understand that it takes roughly 1 quart to go from the bottom line to the top line; so the amount I am under should be about 0.25 quarts (give or take).. which is about what I removed. Anyway, I will re-add in 100ml increments until I get close to the top line now.
 
#10 ·
Yes, supposedly the amt of fluid indicated between the top and bottom (holes, on my 2003) marks is 32oz or 1 qt.
On the ATF dipstick it is ONLY one pint, 16oz.
More oil actually helps dissipate more heat than less oil does. But too much oil in your crankcase can cause MAJOR problems.
If you are really interested, do more research.
Playing safe is overall the best bet for those that don't want to spend the time researching. On engines with over 200 thousand miles, you might take in a little loss of oil due to leaks or consumptions.
I have approx 220k miles on my '03 and I still don't have to add any oil between oil changes, be it 5k or 7.5k miles.
Happy Thanksgiving.

Enjoy life, it gets shorter every one.
Buffalo4
 
#11 ·
I'm quite a bit over the full line on my Accord and have been for probably around 6-7k now:
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owns 2006 Honda Odyssey EX
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#14 · (Edited)
@WiiMaster
That's about where my oil has been in all of my vehicles I have had at since driving cars back in the 1960 era. (BTW I hate all cars that have cross hatches, it makes it harder to see proper oil level.) The biggest key to overfilling is that, if the crankshaft hits the oil so much it will start converting the oil into foam instead of a true liquid state. It's easy enough to see it on the oil-stick when you pull it out if it is overfilled. I do not like keeping a quart oil container with 1/4 quart left in it. My storage space is at a premium, even though I have a garage, I do not have a fire locker to store the amount of oil or other combustibles in (gasoline, paint thinners etc.) so I have a tendency to use everything or dump what I don't need for recycling.

I do not know of any oil that you check with it being cold. The only exception would be with construction equipment, you check it before starting and once you have climbed up into the cab of the equipment you go! Transmissions in most of them is just hydraulic oil in tanks with a site glass (not all, but most). Some equipment has you check the engine oil while it is running as well. I know that the majority of Engine Generators (not little engine generators like for a home, but large ones for hospitals or remote service bases) have you check them while they are running, due to them being the Primary source of power, they generally not shut down to check them.