I just bought from a friend a 06 BF 650 i 4x4, it has 960 miles, and 150 hours. I want to change oils, and I wanted to ask you guys and gals do you use synthetic engine oil or regular. I don't drive much. winter plowing and maybe 100 miles a year messing around if that. Also what cooling fluid should I use. I rather buy online because the local dealer is a rip. Any other tips would be great regarding maintenance. I have engine and vin numbers in case. Tires are new, tire pressure? Thanks , I know i can look this stuff up, but sometimes owners know best.