Oil catch cans can be used for both petrol and diesel engines, but their effectiveness and necessity vary depending on the engine type.
Oil Catch Can for Petrol Engines
- Common in direct injection engines – Since fuel is sprayed directly into the combustion chamber, intake valves don’t get cleaned by fuel, leading to carbon build-up.
- Helps reduce carbon deposits – Prevents oil vapors from coating intake valves, improving performance and longevity.
- Popular in performance vehicles – Many enthusiasts install catch cans to maintain engine efficiency.
Oil Catch Can for Diesel Engines
- More common in turbocharged diesel engines – Diesel engines produce more blow-by gases, which can lead to excessive oil contamination in the intake system.
- Prevents intercooler clogging – Oil vapors can accumulate in the intercooler, reducing efficiency.
- Improves emissions and fuel economy – Helps maintain cleaner combustion by preventing oil mist from entering the intake.
While both petrol and diesel engines can benefit from an oil catch can, diesel engines often see greater advantages due to their higher blow-by gas production.