Honda CR-V & Civic 1.5L Turbo Oil Dilution Guide
On the 1.5L turbo in the CR-V and Civic, unburned fuel can get past the piston rings into the oil — "oil dilution" — especially with short trips and cold starts. The oil level can rise and smell of gasoline. Honda released software updates and extended warranty coverage for affected 2017–2018 CR-Vs and 2016–2018 Civics in cold-climate states.
Call (650) 588-9199Labor Time
30-60 minutes for the check and oil service
Typical Cost
Oil service price; diagnosis quoted if a check engine light is on
Serving
San Bruno, South San Francisco, Daly City, Colma, Millbrae, Burlingame
Warranty
1-year workmanship
Common Symptoms
If you experience these symptoms, your Honda CR-V 1.5T (2017–2022), Civic 1.5T (2016–2021) may need oil dilution diagnosis:
Why This Happens
Understanding the root cause helps prevent future issues:
Our Repair Process
How we handle oil dilution diagnosis at Express Auto in San Bruno:
Check the oil level and smell, and review the trip pattern
Check whether Honda's software update has been applied
Oil and filter change with Honda-spec 0W-20
Recommend shorter oil intervals and an occasional longer drive for short-trip cars
Refer to a Honda dealer for any open campaign or warranty coverage
Parts & Warranty
Parts Used
oil
Honda-spec 0W-20 full synthetic and Honda filter
Service Details
Labor Time
30-60 minutes for the check and oil service
Typical Cost
Oil service price; diagnosis quoted if a check engine light is on
Warranty
1-year workmanship
Frequently Asked Questions
Is oil dilution a problem in the Bay Area?
It is much less common in our mild climate than in cold states, but short-trip cars can still show a rising oil level. Shorter oil change intervals and regular longer drives help.
Will Honda fix oil dilution for free?
Honda updated software and extended powertrain coverage for affected 2017–2018 CR-V and 2016–2018 Civic 1.5T models in cold-climate states. A Honda dealer can check whether your VIN has an open campaign; we will tell you if it looks like it applies.
What oil should a 1.5T Honda use?
Honda specifies 0W-20 full synthetic. Follow the Maintenance Minder, and change it sooner if the car mostly does short trips.
Need this Honda repair?
Book online in 2 minutes — no deposit. Honest estimate before any work — we service Honda CR-V 1.5T (2017–2022), Civic 1.5T (2016–2021) and other makes.
Honda Repair by Peninsula City
We serve Honda owners across the Peninsula — same specialist expertise, no dealer markup.