Diamont UR50 reducer shelf life
 

I have a previously opened quart of Diamont UR50 reducer that is about 2/3 full (originally opened just over 6 years ago). The sealed can has been in my basement in a closet the entire time at temp between 65-70 degrees. Is it still good?

Should be fine. Do a small spray out to test for any issues before using on your car. Irgoatmike

Thank you

I think it will absorb moisture. I used some old, opened reducer that had the lid on tight, and ended up with a problem. I would suggest a test before committing.

Dan

It's less than a quart of reducer. If in doubt I'd just use it to clean out my gun after priming/painting and buy fresh materials.
I'm still using up 20 year old Dupont 3812 reducer (5 gallon cans) for cleaning bare metal, sanding sludge etc.
I resprayed my tool chests and job boxes with an open gallon of single stage SW urethane and hardener that were on the shelf from 1992 a couple of years ago. Still look like I just sprayed them. You'd be surprised of the shelf life of some products but who wants to risk it on something that matters?