Quick PPG Paint question

[Monziac]

Ok, so I painted my car with PPG DBU and DRR Reducer, and I have none left.  I had more mixed (3 years later) and I need to make some repairs but the color I just had mixed is too dark to match even though it was the same company that mixed it.  I also have some DBC in the same color that is too light to match.  My question is can I mix the DBU and the DBC and still use the DRR reducer?  They are discontinuing the DBU line so having more mixed etc is not an option.  I was lucky to get what I got.  I want to avoid using the DT885 reducer because it can have a bad reaction to the feathered edge of the paint. 

Thanks,
Jon

[hemi-hampton]

I would highly not recommend combining the 2. It's one or the other but not both. The older DBU has a reactive reducer that could have bad negative affects on the newer DBC. I wouldn't want to risk it or experiment with it. Others might?   LEON.