I am often asked how and when fuel additives should be added. With an empty or full tank of fuel? Should I wait until it’s down to a quarter of a tank? Etc.
The reality is that it doesn’t matter how much fuel is currently in the tank. The key is to ensure that regardless of the current fuel level, whether nearly empty or three-quarters full when you administer the additive, fill up on top immediately afterward.
Doing so will ensure that none of the fuel additive becomes trapped in the filler neck. Filling up on top afterward will ensure that the entire additive is washed down into the tank. Furthermore, most additives require diluting with a full tank of fuel hence filling up immediately afterward is necessary.
Some feel uncomfortable with the inconvenience of using additives at the gas station. For this, we suggest filling up with fuel and a 5-liter jerry can. Drive home, put in the additive, and then top up with fuel from the jerry can. If you live close to the gas station, don’t entirely fill the tank to the top; leave a little for the additive and fuel from the jerry can.
Contrary to popular belief, additives do not need to be added before filling up with fuel to mix. This is only necessary with fuel storage tanks. Most additives mix instantly anyway, and a moving vehicle provides sufficient agitation to complete this process.
If you require any advice or help, please don’t hesitate to contact us, and a member of my team or I will be pleased to help.