Help! Petrol in sink

[pizza]

Maybe you have a layer of grease on the inside of your pipes. Gasoline likes to dissolve in oily things like that grease. The gasoline may have absorbed into that layer and now it gives back that smell. Run the faucets on hot for 30 minutes followed by several gallons of boiling water. Follow that by a treatment of Draino as per directions on the bottle, or a few tablespoons of lye, as per directions on the bottle. Repeat the Draino several times. That should eliminate the layer of grease on the inside of the pipes.

i thought about that, but wouldn't the fuel vapors harmlessly come out of the drain vent (and not into the living space) like normal sewage gas? that's the point of traps.

i was thinking/hoping everything after the trap wouldn't matter.

 

[Mallen]

Depends on if it's in or in front of the trap.l or further down. Also, is there any drain in the house that never gets used. If the trap dries out that will be a source of smell. It must be absorbed into something.

 

[Lassen Forge]

I have a pair of running shoes that got drenched in diesel 6 years ago and you can still smell it on them. Washed, scrubbed, hosed out, aired, doesn't matter - They still smelled like Diesel. I finally soaked them in a bucket of hot water with a bottle if dish soap, and while they still stunk of fuel, it was almost tolerable... I hope the local landfill appreciated my "donation".

Then there's my propane coveralls - was filling a service tank from my "wet tap" and got sprayed - Same problem, but this time it's Methyl Mercaptin (the stuff they add to give it it's traditionally garlic-like smell), that stuff is used because its recognizable in parts per billion (so you know theres a gas leak) and like diesel it bonds to anytgung that absorbs it and, well, Pee You, that stuff lives for years.

 

[Two Speed]

Do you have a dishwasher? Does UK dishwasher detergent still have phosphates in it? (not dishwashing liquid you use to wash by hand) If so, mix up a batch in hot water and pour that down your drains. It is designed to remove grease, if the gasoline has bound with the grease causing the odor to remain, dishwasher detergent should help clean out the grease. Let it sit in the trap for a bit and follow up with a hot water flush.

This stuff; https://www.amazon.com/dp/B00PT0324C/?tag=atomicindus08-20 apparently was what normal everyday cascade dishwasher detergent used to be before the phosphates where removed from the dishwasher branded stuff and does a remarkably better job at cleaning. Hopefully you can find a UK equivalent.

[Why is the forum adding more to the amazon link? Is it making it an amazon affiliate link for the garagejournal? If so, no problem. If not cut n paste the following;]

https://www.amazon.com/dp/B00PT0324C