Prolific Poster Award
Join Date: Sep 2004
Location: Coventry, CT, USA
Just grab a bottle of distilled water at the grocery store for a $1.00... Can't go wrong there.
Bigger question is how much do you need to add, are you sure you need to? If you really do need to add coolant, as in the reservoir is below the low-level line, where did the coolant go that you are replacing? The reservoir bottle has a high mark and a low mark for a reason. If you are between those marks, even if you are closer to the low end, you don't need to add anything. Being on the high mark is not going to gain you anything and gives you less room for expansion if needed.
If you're loosing coolant, forget adding more. Find out where it's going first.
Dan. "Painfully mistaking my big talk for the truth" Samantha Fish.
2003 ST4s (The Truck)
1995 916 (Junk Yard Dog)
Last edited by SS904; Jul 19th, 2019 at 7:15 am.