To me that sounds like a simple disconnect between the advisor and service crew at the dealer. I'd suggest bringing your own oil, even if it were Honda full synthetic.
Really good readouts, thanks for sharing.
Great info, and agree on all points. Thanks for sharing.
It went above the orange plastic portion on the dipstick. I didn't precisely measure the amount, but when I emptied my oil drain pan into a one gallon jug, it filled an empty one completely and some more went into a partially full jug.
I purchased my CPO 2017 Civic Touring with 21,000 miles at the end of Dec 2019. When I checked the oil level a week later, it was 3-4mm above the orange plastic. It seems it was overfilled when the dealer changed the oil prior to sale. Within 2000 miles, or 2 months, I changed the oil and 4.8 qts of oil came out. I was shocked to see how much overfill the dealerships had pushed into this little engine. Anyhow, I added the 3.7qts and over the last 1500 miles, the oil level has not changed. My wife is the DD for this car and she averaged 350-400 miles a week and so far things are looking good. Maybe yours was overfilled from the factory as well?
I definitely should have checked it on day one. I did check the tire pressure, but not the oil level. You would think with the automation of modern manufacturing that the oil would be metered somehow when initially filling the engine.
Of course it does, and in fact that's how Blackstone Labs estimates the fuel content in oil. The 3.5% dilution number in the results above is derived from the 315 F flashpoint number. The one that's actually measured is the flashpoint. The % dilution is calculated. The accuracy of the estimate depends on the accuracy of reference data on the effect of gasoline content on the flashpoint of oil. This method would require data on all the combinations of gasoline blend + oil mixtures. They are unable to take these differences into account, and I believe their % dilution numbers are somewhat underestimated.
