Which Gear Oil Is Best?

commonarcwelder

Petty Officer 2nd Class
Joined
Oct 8, 2007
Messages
103
Hello all. Was wondering what gear oil is deemed to be best for OMC? Ive been using Royal Purple Max Gear 75w90 in my 35 'Rude for a couple years now with no problems. Could I use this in my 1996 'Rude 225 Vindicator? Does anyone reccomend this oil? Thanks!
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: Which Gear Oil Is Best?

recommended is 80-90 outboard gear oil, it has additives to protect the lower if you have water intrusion. always replace the washer on the vent and drain screw. #1 cause of water intrusion.

on the older electric shift motors, Premium Blend Type C for electric shift.
 

1730V

Chief Petty Officer
Joined
Feb 14, 2004
Messages
563
Re: Which Gear Oil Is Best?

I use nothing but OMC/Bombardier "Hi Vis" in all engines, except electric shifts which require Type "C" as Tashasdaddy stated.
 

LubeDude

Admiral
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Oct 8, 2003
Messages
6,945
Re: Which Gear Oil Is Best?

Could I use this in my 1996 'Rude 225 Vindicator? Does anyone reccomend this oil? Thanks!

The answer is yes!!!

Automotive synthetic oils will hold the moisture just as well as a marine gear lube. As with any lower unit lube, you should check it often for moisture and discoloration. I check mine a dozen times a year. I have been using Amsoil in all my lower units for over twentyfive years with very good results! I currently have it in my 96 Johnson 200.
 

commonarcwelder

Petty Officer 2nd Class
Joined
Oct 8, 2007
Messages
103
Re: Which Gear Oil Is Best?

The answer is yes!!!

Automotive synthetic oils will hold the moisture just as well as a marine gear lube. As with any lower unit lube, you should check it often for moisture and discoloration. I check mine a dozen times a year. I have been using Amsoil in all my lower units for over twentyfive years with very good results! I currently have it in my 96 Johnson 200.
Thanks Guys! Is that AMSOIL 80w90 or 75w90?
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: Which Gear Oil Is Best?

We have used Pennzoil 100% synthetic lower unit gear oil and TCW-3 in all of the family's motors for several years with excellent results. I think that the additives in the marine lower unit oils are designed to do the job well.

Shell owns Pennzoil and they are a huge company with a lot at stake in the Pennzoil Marine lines. I feel confident that the products are good.
 

commonarcwelder

Petty Officer 2nd Class
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Oct 8, 2007
Messages
103
Re: Which Gear Oil Is Best?

To me I think the pennzoil outboard oil burns alot cleaner. I do alot of idling fishing the marshes around here and my 35hp doesn't load up near as bad as with the Quicksilver or OMC oil.
 

commonarcwelder

Petty Officer 2nd Class
Joined
Oct 8, 2007
Messages
103
Re: Which Gear Oil Is Best?

My father used to work in a lab in a plastics plant. He had tested the different 2-cycle oils and found that none compared to Citgo as far as heat and pressure tests.
 

TheOilDoc

Petty Officer 1st Class
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Sep 26, 2004
Messages
233
Re: Which Gear Oil Is Best?

The answer is yes!!!

Automotive synthetic oils will hold the moisture just as well as a marine gear lube....I have been using Amsoil in all my lower units for over twentyfive years with very good results! .

Must LubeDude pimp Amsoil at every given opportunity? There are numerous gear lubes on the market that perform and protect as well, or better, than Amsoil - for a lot less money.

Marine specific gear lubes will have extra corrosion inhibitors and demulsifiers when compared to automotive gear lubes. I recommend you use a marine gear lube for your marine application.
 

eriefeelin

Seaman Apprentice
Joined
Apr 12, 2007
Messages
46
Re: Which Gear Oil Is Best?

I use Lubrimatic Power Pro semi synthetic in both our Alpha 1 outdrive and our SeaDrive 1.6 outdrive with very good results. It runs about $8 a quart.
 

LubeDude

Admiral
Joined
Oct 8, 2003
Messages
6,945
Re: Which Gear Oil Is Best?

Must LubeDude pimp Amsoil at every given opportunity?
Marine specific gear lubes will have extra corrosion inhibitors and demulsifiers when compared to automotive gear lubes. I recommend you use a marine gear lube for your marine application.

You really want to start another war don't you? I guess it's just the way you roll!!!

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Universal Synthetic Marine Gear Lube SAE 75W/80W-90 (AGM)
High Performance lubricant engineered to meet the demands of marine applications. AMSOIL Universal Synthetic Marine Gear Lube provides:

Excellent Gear and Bearing Protection even when contaminated with 10% water
Reduced Friction and Wear
Rust and Corrosion Protection
Long Seal Life
Superior Foam Prevention
 

Outsider

Lieutenant Junior Grade
Joined
Apr 24, 2007
Messages
1,022
Re: Which Gear Oil Is Best?

I recommend you use a marine gear lube for your marine application

Right on, Cuz, I couldn't agree more!


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