I was thinking about replacing the fluid & now it sounds like a good thing to try. I have only had 2 Chevys in the past 36 years. The other one was a 57 wagon back in 71. This one was bought last fall from a friend who gave up driving because of age. The price was right & only 68,000 miles on it. It was only used in the summer months and has not seen snow until this year. fordman