I think 1 1/2 gallons on the 21B and I don't think I've even ran my 30 since the last time me and you talked
I've been using my CRT as my project car (PM if you want to know what the project is)
Heres a video of the last time I drove
http://rcuvideos.com/item/L9W8LX570VXLTCJ1 hopfully more videos to come (and better ones)