Millicent motorists will no longer have access to LPG from June 10.
The sole outlet for the gas in Millicent is K&S Fuels at the Billygoat Corner.
The company has recently posted notices at the service station and online.
K&S Fuels said the decision to withdraw LPG from sale was permanent and it has extended its apologies to motorists who may be inconvenienced.
Millicent has only one other fuel outlet on Adelaide Road.
It is also owned by K&S Fuels and it does not sell LPG.