Synthetic lower unit oil?

[billybass]

Are their any negatives to running synthetic LU oil? Motor is about a year and a half old so I'd say the unit is broken in.

Thanks, Bill

[slapshot]

I have heard nothing but positives about running sythetic LU lube. I just started using Amsoil LU lube this year and haven't had any issues. I guess the only negative would be the cost. But, I'll gladly pay more for better protection.

[BuzzB8]

I've been running synthetic for a few years now, Bill. Go for it, and you might even gain another 100 RPMs.

[flipNfrog]

I switched to synthetic LU lube this season and I swear im turning more rpms.

[billybass]

Thanks guys. That's one of the things I was told was that I'd pick up some rpm's. Appreciate the quick feedback!

[headhigh]

Bill, I run the Amsoil marine gear lube in my old Yamaha lower unit and I love it. When I drain and refill now, I don't have the metallic powder on the plug like I did before.

[ChampionDon]

Okay, When one is replacing the lower unit oil, How much should one have? I hav a 250 ox66.

[headhigh]

My ProV 150 lower unit uses a little over a quart. I think it's about 34-35 oz. Yours is probably about the same.

[slapshot]

Yeah, mine takes just over a quart. One word of warning. If you decide to use Amsoil, make sure your hand pump fits the bottle if you use one. I have one of the cheap hand pumps for the lower unit. The Amsoil bottles are bigger on top than a standard 1 qt oil bottle. Luckily, I had an almost empty regular 1 qt bottle laying around, so I just poured the Amsoil in the and pumped it from there into the LU.

If you buy 2 qts, you'll have close to 3/4 qt left over. I'll only buy 1 qt next spring when I do it again.

[pnut]

i run royal purple and have had no problems for over a year

[ChampionDon]

What type of hand pump do you have? What is the best one to use?

[reelman]

Amen...its a good move! Been there.

[slapshot]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by SkeeterDon &raquo;</td></tr><tr><td class="quote">What type of hand pump do you have? What is the best one to use?</td></tr></table>

One like this....

http://www.westmarine.com/weba...10440

[xpress spanky]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by pnut &raquo;</td></tr><tr><td class="quote">i run royal purple and have had no problems for over a year</td></tr></table>

Same here. One of my brother inlaws is a chemical engineer that helped with the development of royal purple products.I run their oil in my old cars as well.