I have used the small touch-up bottles of painf from BVM too, and this information came with them.
The correct reducer for the BVM touch-up colors is PPG DT 870 for standard shop conditions. PPG makes other reducers for this paint, such as DT860 and DT 885, bur they are for cooler and hotter weather. The reducer speed difference is to keep the reducer from flashing off too fast or too slow in different temperatures. Slower reducer in higher temperatures, faster in colder......DT 870 is for "standard" shop temps. I'm no expert, but that's my .02 worth.

The color you have is PPG "Concept" acrylic urethane enamel. Don't forget to add the correct amount of DCX 61 catalayst.

Google has good sources of information on the PPG product line.
Customer service at BVM is a good source of information as well.

Hope this helps

Harley Condra
BVM REP
JetCat REP