[bwader]

Changed oil and filter on my gz today at 7,500 miles.

Even let out the oil through the side 17mm bolt. Been using Valvaline motorcycle 10w40 oil and glad I know about the cheaper oil filter than the Suzuki brand.
Oil was dirty brown, was glad I changed it. It had been about 2,500 miles of me owning and I did an oil change then for my own piece of mind.

Cleaned the air filter with compressed air.

Started easy quick cleaning the carb. with cleaner: In ON or RES position pull off the vacuum line to petcock. 2. Take off the fuel line from petcock. 3. Let carb. run out of gas while engine is running 4. Fill the fuel line to carb. with carb cleaner and run engine til it dies revving the engine some. 5. repeat once more and hook back up vacuum and fuel line.

Rode home after 11pm for 20 miles it was 57F and chilly at 55-61mph with jeans and two long sleeve shirts on and reflective vest. Bike performs better when its warmer outside. On the way to work, after 2pm it was 75F and maintained 61-65mph in 5th.

I ride 40 miles a day commuting to work and hit reserve around 178 miles on average.
157miles worst about 53mpg gunning it that tank, best 65mpg keeping 40-45mph and small stretches of 55mph.

Greased the chain earlier before work.

Bike does run better and healthy sounding but not by much, which is good it wasn't that much worse before.