Limbach have not put a life on them. On Inspection. So your decision. Keep away from Avgas and they go a long time. Cheers. Nige.
From: Ian Mc Phee Sent: Sunday, November 06, 2011 7:04 PM To: DOG LIST Subject: [DOG mailing list] cleaning plugs A mate for years ago said to use oven cleaner on cleaning plugs. It took 3 goes together with a toothbrush and the plugs came up white eventually. How long are those special 3 prong Limbach plugs supposed to last - 500hr or is it 1000hrs - they are sure good Ian McPhee
