When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Just checked coolant today with fleetguard test strips, and got a reading of 2.0 as far as I could determine. It says I should change coolant filter, and add additive at next oil change. Should I just drain and refill with new filter, coolant and additive?? 1.5 to 3.0 is within normal range. I don't know where the coolant filter is either. I have a 97 crewcab with 88,000 miles. Please advise. Jeff