there’s a mechanic who’s recommending an atomizer for my car. it’s supposed to disolve all the carbon and remove all the sludge.
The car is 20 years old with How many miles? You didn’t say.
If the car is running OK and you use quality gasoline, I’d say your mechanic has a boat payment coming due and figures he can get it from you. So don’t bother.
If its running rough, then sure, give it a try.