Paint Thinner to use with Cat Yellow Part No. 458-9576

That's odd, cat used to sell thinner for their paint, I have a can will look and update

Just another alkyd enamel, 458-9576 is manufactured by Sherwin Williams.
Solvent for Alkyd Enamel (Rustoleum)
Fast dry…..Acetone, Naptha
Medium….Toluene
Slow….Xylene
Very Slow…..Paint Thinner (Stoddard Solvent)

Based on your location\temperature\humidity - be aware. In my experience most paints are " ideally" applied around 70 F. Of course you can paint almost at any temp with correct combinations of chemicals and heaters etc, just something to be aware of. I recently sprayed some primer surfacer and directions stated not to apply below 50 F.

Also, I always add catalyst\hardener to oil base enamels. Makes the paint more durable and fuel resistant, in my opinion. 1\2 pint to one gallon ration. Tractor supply sells it - or try Amazon . In my warmer climate I have had good luck with acetone as a reducer

Thanks Old Magnet you are a wealth of knowledge. What ratio do you think I should mix if I use Acetone?

I don't know of any fixed ratio. Get yourself a viscosity cup and thin accordingly for spraying. In general about 10% is considered maximum. That Cat paint may be close to spraying viscosity right out of the can but I have not used that product.

Always use a good respirator, especially when using hardeners.