[hansen.lucas]

I’m thinking I need to put a set of thermostats in my LLY. I just replaced my block heater maybe 2,000 miles ago so my coolant is pretty fresh. Wondering if I can get away without draining the whole system again? If so how much should be removed to not make a mess doing thermostats.

 

[BOWTIE67]

Remove the Housing, Until it stops spilling out!. Less than a gallon

 

[chevymec]

I didn't lose much at all. I just did mine.