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Fuel Treatment for Petrol Engines

Former MemberFormer Member Posts: 1,876,323 The Mix Honorary Guru
What would happen if you put Deisel treatment in a 4 year old petrol car?

Just asking cos I bought a twin pack of STP that said petrol on the outer wrapper but as I was about to pour it in I saw the individual bottle said deisel - so got to take it back but if I hadn't noticed would it have ruined the car or the cat?


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