How many times do you want me to repeat myself? Clearly, heavy fuel dilution isn't good. Use a thicker oil, and change it more often. UOA reports don't suggest the sky is falling. Don't be a chicken little.
Long Term 5w-30 use in Honda 1.5t
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How many times do you want me to repeat myself? Clearly, heavy fuel dilution isn't good. Use a thicker oil, and change it more often. UOA reports don't suggest the sky is falling. Don't be a chicken little.
Honda actually released a paper that talks a little about oil dilution and it compares multiple different engines they produce. Anyone can download and read it. Link
Here is a figure from the paper. Engine No. 6 (Purple) is the 1.5T and Engine No.7 (Light Blue) is the 2.0T. From their testing the 1.5T has worse oil dilution but the rate of fuel adhesion and oil dilution per cylinder appear to be similar between the engines. The 2.0T just holds a slightly larger quantity of oil for the size of the engine so the overall percentage is slightly less.
Here is a figure from the paper. Engine No. 6 (Purple) is the 1.5T and Engine No.7 (Light Blue) is the 2.0T. From their testing the 1.5T has worse oil dilution but the rate of fuel adhesion and oil dilution per cylinder appear to be similar between the engines. The 2.0T just holds a slightly larger quantity of oil for the size of the engine so the overall percentage is slightly less.
That's a tough read, but a good one. I agree with your interpretation that the 1.5 and 2.0 turbo Honda engines dilute roughly the same amount. Nobody bitches about the 2.0, but there is lots of complaints about the 1.5. Social media "trend" to bash the 1.5T. Personally, I like mine.
I would already anticipate some of the changes mentioned to be on some production engines if they are talking about it on a publicly available paper, the OEMs tend to be very tight lipped until serial production. It wouldn't surprise me if some mentioned injection calibration changes were made for the MY22 1.5T Civics'.
It's not nearly as common of an engine, so there isn't nearly as many people to complain about it. But it has definitely been talked about on this site.
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love a good Christmas argument.
fwiw, i've yet to have my oil level rise to due to oil dilution. 37k miles of short trip city driving on my Si.
fwiw, i've yet to have my oil level rise to due to oil dilution. 37k miles of short trip city driving on my Si.
How do you know that oil is not burning off and being replaced by fuel? Did you measure fuel dilution through UOA?
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Unlikely but possible I guess. I check before every time I drive so I imagine I would see it rise. I have not done any used oil analysis yet. I have smelled gas on the dipstick but not enough to increase the oil level.
I feel this is in my soul. I wonder if my k20 is a lawnmower when putting around town
So, common thinking by a fair number of people suggests that short tripping puts the vehicle into a "severe duty" drive cycle, which implies more frequent oil and ATF/CVT fluid changes. I've adopted this approach, anyway. When checking the Honda Civic Owners Manual and the factory service manual, I can't find any mention of this approach to maintenance. Only thing I see is a reference to driving in the mountains under heavy load, leading to more frequent transmission services.
Do other manufacturers specify more frequent oil changes when the car is primarily driven in the city all the time? Common sense suggests that short tripping results in engine oil that rarely sees full temperature, so moisture and fuel in the oil can accumulate. Honda doesn't mention anything, though.
Do other manufacturers specify more frequent oil changes when the car is primarily driven in the city all the time? Common sense suggests that short tripping results in engine oil that rarely sees full temperature, so moisture and fuel in the oil can accumulate. Honda doesn't mention anything, though.
Synthetic 10w30 coming up soon.
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could you share the used oil analysis? Thanks!
I sold my 2016 Civic Coupe last year with about 125k miles on it and it was running fine on a steady diet of 0w-30 VW 504 spec oil that I use in all my other cars. It did suffer from fuel dilution early in its life but it seemed to have lessened over the years. I used a 5k oci due to this fact.
First winter my daughter had it at college she came home for Christmas break and the oil was literally almost an inch above the orange indicator section for the oil level. Short trips around campus and brutal cold, the car spent over week buried in a snow drift on the terraced parking lots on campus.
First winter my daughter had it at college she came home for Christmas break and the oil was literally almost an inch above the orange indicator section for the oil level. Short trips around campus and brutal cold, the car spent over week buried in a snow drift on the terraced parking lots on campus.
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