I run tamiya blues all round.oil, well depends on condotions. I found Lee martins 511 outdoor set ans it works well. It's gor York outdoor track. You would normally set the whole up to Inc the shock set as well. I run 32.5 oil in the rear and 35 in the front. Have alook at this link
http://rclazy.com/wp-content/uploads...Lee-Martin.jpg