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07-04-2011 | 05:31 PM

#141

GPM

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Joined: Mar 2004

Posts: 2,696

Likes: 93

From: Pa

Hot Pursuit, did you ever run the Richmond Gear, lube ?

07-05-2011 | 06:57 AM

#142

waconda

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Joined: Oct 2007

Posts: 468

Likes: 0

From: Union, NE

Quote:

Originally Posted by cprperformance

Well, put in the 75/140 severe gear 8 qts. to 1 qt. lucas and so far very happy with the results. Shifts much softer and smoother in and out of gear. Won't know about gear life until tear down, but I think that this is going to be a very benificial formula.

Only thing you did was raise your drive temp by putting in a thicker oil.

07-06-2011 | 12:40 AM

#143

articfriends

Platinum Member

Joined: Jun 2004

Posts: 7,317

Likes: 1,037

From: frankenmuth michigan

Quote:

Originally Posted by cprperformance

I have read this whole thread and am kind of supprised that nobody has tried amsoil severe gear 75/140. I am just in the process of changing my drive oil and just kind of thought that if the 75/90 severe gear works good than the 75/140 should work even better as far as stopping metal to metal contact. The pourabilty seems to be about the same, not much thicker.
Has anyone tried this? Any thoughts?

I have used amsoil sever gear but in a lighter weight. About 6 years ago I sent gears lower gears in to a lab and had them tested and examined under a microscopic deal, cut in half, the whole works. the base metal is elastic, the outer "shell" is like a egg shell, once it is over powered the base substrate starts to shift around and case hardness starts to fail. I tried having them case hardened, dlc coated, and cryo iso rem finished. My boat has over 1000 ft lbs of tq and hp, stock merc lower gears lasted me between 10-20 hours, cryo-iso doubled this using royal purple (garbage) and merc high performance. I switched to Amsoil severe gear and lucas mix and gear life doubled to between 40-60 hours. I recently switched to Bravo shop special blend neo, will see what it does, Smitty

07-06-2011 | 12:43 AM

#144

articfriends

Platinum Member

Joined: Jun 2004

Posts: 7,317

Likes: 1,037

From: frankenmuth michigan

Quote:

Originally Posted by Strip Poker 388

no mater what if you over load a drive gear above what it was designed to do it will loose its boundary lubrication.Pushing the oil to mechanical shear, thinning oil to the point of causing metal to metal=brineling.

Thats why the make larger gears.

Yea im sure some gear lubes have more ep molecules than others.

also look a STP oil treatment,the money they made selling a treatment,advertising/promoting a product thats better than all the rest,theres a new oil company selling something new every month.

In my experience I think the amsoil has a better ep package then most others, I have had the best luck with it/longest gear life. I am now trying the bravo shop Neo blend, will see!

07-06-2011 | 07:18 AM

#145

SS930

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Joined: Aug 2003

Posts: 6,679

Likes: 3

From: At the office.

Quote:

Originally Posted by HotPursuit

Cant keep comparing #6 dry sumps to bravos..
The drysumps have oil pumps that spray the gears!!
This is the reason you can run a lighter weight oil !!
All other drives run a wet sump with the gears spinning in the oil like a prop!!
The reason you need the heaver viscosity!!
I have run over 1000 HP on #4 drives!! The only oil on the market that would keep the drives alive is amsoil!!!
This was not a guess we blew up drives under 25 hrs and fried gears with just about every oil out there.
Mercury mineral oil was the worst!! AS far as I know Mercusier builds drives and does not have a oil refinery.
Royal Purple is a joke!! Very short term protection and does not like water!!
Swepco and torco were pretty good!!
RedLine was close but a shorter life than others..
You dont need to add anything to Amsoil!! The reason most oil works better with The Lucas additives is it holds more oil on the gears longer.. If you run a higher viscosity than you really need your just robbing horse power!!!
The best upgrade you can do to a high HP on a bravo drive is to install the pump and external cooler system which increases the capacity while keeping the oil from boiling!!!
Just My 2 on 30 yrs of breaking anything that cant be broken!!

I assume you're running dry 6's on your Skater now, if so, what are you using for oil with those drives?