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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 35625
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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I just put 1 gallon of gas in 6.0 diesel. I at first thought

Customer Question

I just put 1 gallon of gas in 6.0 diesel. I at first thought no big deal and topped the tank off with diesel, now I have 39 gallons diesel and 1 gallon gas. Should I still drain the tank and change fuel filters or would putting in an additive be ok?
Submitted: 1 year ago.
Category: Ford
Expert:  Ron replied 1 year ago.

Hello and thank you for your question,

As long as you only put one gallon of gas in the tank and you have 38 gallons of diesel you should be fine, one gallon diluted with this much diesel will not cause any harm and or adverse affect. The fuel filter should not be affected as well with such a little amount. You have plenty of diesel fuel to give the engine the lubrication it needs.

Expert:  Ron replied 1 year ago.

To be on the safe side its would be a good idea to add one quart of ATF (transmission) fluid to the tank as well to assure you have enough lubrication in the fuel.