Can I use that new engine coolant in my engine ( I think it has a reddish color). Or should I keep using th egreen stuff.

 

Thank You.

Is there any reason why I cannot use the reddish stuff.

 

it's not christmas time in your engine, so keep it green. seriously, look at your manual and check the recommended engine coolant. most likely any special type of high mileage radiator fluid, some different mixture or special blend is bullshit at any rate, so just keep it green. trying to give a good explaination, but basically, skimping and using the cheap stuff in your radiator doesn't cause any harm, so QUIT WASTING YOUR MONEY!
peace