My coolant is on low so I purchased some coolant directly with the MB dealer, and the bottle indicates 325, which should be correct. I opened the coolant and noticed it was blue...,while the coolant in my reservoir is clear/yellow. I also noticed my reservoir has tons of dirt accumulated on the bottom.

Should I just get a coolant flush or pour my currently mixed coolant into the reservoir? Also, I should mention I purchased this car pre-owned with an Infinity dealership, so I don't know if the dealership did anything prior to selling it to me. I'm currently at 57K miles and my coolant is well below the full level.

I know I should be researching the forum, but I really don't have time. Any advice would be helpful.

Thanks!

 

This LINK says they are interchangeable.

 

Ahh thanks for the info.