I have a new to me 1976 Glasply with the 140 hp Mercruiser. I have a Clymer manual which as most of you know is very vague! My questions are on the power trim. After running the engine and bringing it up to temperature yesterday, I shut off the engine and opened the fill plug on the power trim unit 
and oil squirted out under pressure. I quickly replaced the plug. The oil was reddish in color (hydraulic fluid?). The wording on the housing of the unit says to use 20w motor oil. Now to the questions.<br /><br />1: Would hydraulic oil work?<br />2: How do you check the oil level in the unit?<br />3: Will I now need to bleed the lines?<br /><br />Thank you for any help.
and oil squirted out under pressure. I quickly replaced the plug. The oil was reddish in color (hydraulic fluid?). The wording on the housing of the unit says to use 20w motor oil. Now to the questions.<br /><br />1: Would hydraulic oil work?<br />2: How do you check the oil level in the unit?<br />3: Will I now need to bleed the lines?<br /><br />Thank you for any help.
