My mom's impreza will loose oil between oil changes with 0w-20 and will be fine with 5w-30. It burns the thinner oil.
My wife\u2019s 2012 Impreza is at 195k miles and I switched it to 0w-30 and then 5w-30 due to oil consumption. Was burning a quart every 1K miles on 0w-20, burns half that on 5w-30. I\u2019m actually considering going thicker.
The dealership here itself was using 5w-30 as the default for oil changes even though 0w-20 is stamped on the filler cap. After checking myself that Subaru said that would be OK, I started using it too for my own changes just to avoid flipping back and forth -- though I have no idea if that would be a problem. In any case, the Forester seems happy, even if the mileage may have dipped slightly.
Engine does become a bit quieter with 5w-30.
I have a 2023 Civic Si.
I did every oil change at around 8k miles which is when my maintenance minder popped up, even though the dealer recommended every 5k. No issues ever, now at 46k miles.
Doesn\u2019t hurt so why not. I feel like that\u2019s the main answer and what pushes me to do it.
I bought a new limited, last week. I did my first oil change yesterday and the amount of shit in it was crazy. Definitely do it.
-Guys I realized I haven't changed my oil for 60k kilometers how bad is it\n\n-My 20 year old Honda has a fairing loose how do I fix it
I ran 10W-50 and 10W-60 for a few years in an old and beaten up Honda in the hope of reduce oil consumption to avoid having to open the engine. Long story short: it's not harmful, it's an expensive gimmick, the only real-life effect is fuel consumption will slightly worsen and that Honda had occasional issues with VTEC (a well known issue in those engines when running high viscosity oils).
I dont know about the newer 1.5t in the crv's, but im getting rid of mine because of the oil dilution issue. Sent out an oil sample and it came back with 8.2% dilution on oil that had 2k miles on it with 0 idle time. All the technical service bulletins have been done and \"nothing\" is wrong with the car.
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If choosing engine oil across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare engine oil across these categories:
In March 2026 on PartReview, engine oil OEM Honda were overall better than OEM Subaru.
In March 2026 on PartReview, engine oil OEM Honda were overall more popular than OEM Subaru.
By vote balance, engine oil OEM Honda surpassed OEM Subaru:
By number of reviews, engine oil OEM Honda surpassed OEM Subaru:
In March 2026, according to PartReview, engine oil OEM Honda led more car-specific ratings than OEM Subaru:
OEM Honda are chosen by owners of cars such as: Honda Civic, Honda Accord, Honda Fit, and others.
OEM Subaru are chosen by owners of cars such as: Subaru Forester, Subaru Impreza, and others.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of engine oil OEM Honda with: Mobil, Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota.
Also available: comparisons of engine oil OEM Subaru with: Mobil, Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota.
You can also see who is better among other engine oil manufacturers: Mobil or Castrol, Mobil or LIQUI MOLY, Mobil or MOTUL, Mobil or Shell, LIQUI MOLY or Castrol.
