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Fluids, leaks and smells

Rotten egg smell from the exhaust

What it usually is, by vehicle

Pencil sketch of a Subaru Forester in a garage
Diagnostics & Repair

P0420 on a 2014-2015 Subaru Forester 2.5L: Causes and Repair

JC Landry · Oct 27, 2026

Covered makes

Subaru

Other fluids, leaks and smells

Coolant level droppingGasoline smell from the oil or dipstickOil level rising above the full markWhite smoke from the exhaust

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Ask emanuals.ai about your car

Answers come from the factory manual for your make, model and year, with the page cited. Join the waitlist and we will email you when a spot opens up.