I have a 93 2.5 TD. It has 208k miles. I purchased it 2 months ago and it is averaging about 28 mpg in mixed driving. The AC works great.

I noticed it has green coolant. I have heard this is not good for the MB.

Also, everyday on the way home in 95+ heat the guage moves to right above 100. My dad said I should invest in a new radiator. I found one for $243.

My questions

1. Should I replace the coolant first and see if that helps the high temps on the way home? or
2. Should I go ahead and replace the radiator and the coolant at the same time?
3. If I choose to replace the radiator how hard of job is this on the 93 2.5?
4. If I get the radiator replaced at a shop is there anything else they should do like flush the block?

Thanks,

roane3

PS - Nothing like 3 100 degree days in a row to get you thinking about cooling system.

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93 - W124-2.5 TD - 208k
00 - UZJ100-4.7 - 130k
Raleigh, NC