Hey guys my dad got a BA wagon put on LPG injection. He just wanted to know when to change the gas filters? at what intervals.

we checked the work ute's filters every 6 months, always clean, just discolored.

Depends on what the kit's manufacturer advises you.

My easyjet system, iirc is every 20,000 or 6mths, whichever occurs first. I usually find tho that i can get 40,000 or upto 12mths out of them. I pull them out at the service interval, and if not gunked up (from dirty LPG), just give them a degrease & refit. Last pair i bought cost me $50, so why throw them away too often if not required? I also have to travel a fair way to get them, not many places willing to sell the filters to someone off the street.

Cheers

ToranaGuy