Today is September 23 and on the 18th of August I had just bought the boat. I gave her to my mechanic to give her the once over and had the oil and lower unit fluid changed on the 20th of August. She's been in the Saltwater about 5 times since then.<br /><br />Do you think I need to change both fluids again for winterization or can she go until next years winterization? <br /><br />I have a 3.0L 1999 Mercruiser.
