My boat has a 1975 mercury 50hp with an aftermarket trim/tilt. I have owned the boat for less than a year. The first time out this summer I was experiencing problems with my trim unit. <br /><br />First: The trim button is not working, the buttons for trailering and lowering the motor were working.<br /><br />Second: When raising and lowering the motor it would get stuck up and down for a couple of seconds then finally catch and work.<br /><br />I was going to top off the hydraulic fluid, but I was not sure what to use. I am pretty sure the previous owner told me to use dextron III, but I am not positive. The unit says use only Kiekhaefer formula 4-20w-oil. Could not find any info on-line.<br /><br />I appreciate any information I receive.<br /><br />Thanks,<br />Joe
