One dealer said use 30 weight motor oil. A second said 90 weight gear oil? What the heck now I'm unsure. Bought boat used and dont have manual. Boat is 97 Sanger V210.

Walters V-Drive manual says use 30 wt HD motor oil

30 wt motor oil 2nd'ed

30 wt motor oil 3rd'ed

SAE 30

i use non detergent oil which is difficult to find BUT i have heard regular 30wt oil(with detergent) will work as well(according to correct craft). my friend who was a nautique mechanic suggested 90wt gear oil. the 90wt will probably perform better and last longer with constant use but the 30 wt will allow for easier starts/engagements

Another vote for SAE 30. Use it in my 210; based on what was recommended for the Walters unit. <BR>Also if you take out the old oil you should notice a difference between 30 and 90 wt. 90 wt is pretty thick.

Motor oil of 30 weight is the same viscosity as gear oil of 80 weight. Either one is fine. <BR>The detergent helps if you have a filter but does nothing under normal use if you have no filter. Under severe use its a negative. <BR>Both the dealers were correct.

Another vote for non-detergent 30w. Although I was told 80w as well by a dealer.