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J150 Lower Unit OIl

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seahuntdave

New member
"Having recently purchased thi

"Having recently purchased this engine, I decided to change the lower unit oil. To my surprise, it was green color. I assume this is synthetic?

I replaced it with conventional high quality lower unit.

Is the green oil synthetic. Is it so much better to warrant going back to? Is there a problem changing back and forth? (residual mixing)

1998 J150 EXECD (25" extra long shaft)

Thanks,

Dave"
 
"synthetic,is supposed to be b

"synthetic,is supposed to be better oil for lots of reasons.....we use sierras premium gear lube at my shop...,on a new,high HP eng,i would use synthetic.
not a prob,going back and forth."
 
"If you change the lower unit

"If you change the lower unit oil once a year or every 100 hours of run time (whichever comes first), I don't really see a need to spend the extra money for sythetic.

Just pick an oil that is GL-5 rated and all should be fine.

Green oil? could be a sythetic - or maybe it was just moldy
"
 
"Yes, it is green- but it is c

"Yes, it is green- but it is clean and clear. Glad to know I did not mess up using conventional oil.

The inexpensive pump and hose kit that screws onto quart oil bottles makes it so much easier to do a lower unit oil check or change. Don't want to go back to squeezing that plastic tube.

Thanks to all-

Dave"
 
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