SSM 6 gear lube?
 

Wondering what the preferred gear lube is these days for the dry sump 6's... other than the Mercury HP lube and ultra expensive *** product.

Also, what intervals are you guys changing the oil at?

Torco MTF

Torco RTF is thinner and has a GL 6 RATING

you can buy the merc HP gear lube at west marine if you have a port supply acct for $78 for the 2.5 gal jug. thats not too expensive is it?

Not too expensive, I was just wondering what other prefered options were out there these days.

BTW, anyone know the capacity spec for the dry sump 6 off hand?

1 gallon

A torco rep I spoke with told me that there is absolutely no reason that you couldn't run the RTF instead of the MTF. The RTF won't break down as bad under extreme pressure unlike the MTF, which leaves less of a cushion between the teeth on your gears.

How is that Torco working for u guys? :lolhit:

The MTF, not so well..... according to the metalurgist, lmao. We'll see if the RTF is any better. I would really like to try your NEO oil. I'll give you a holler sometime later this week.

Dry Sump 6's take Torco - DO NOT use High Performance Gear oil -

fill to the vent level at the middle of the drive. Change every 25 hrs.

been using Torco MTF with 8 oz of Pro Blend for years along with some buds in Fl and after 100 hour inspection was told gear sets look like new .....

How much power are you running? Do you run them hard?

a bunch , and we run em like we stole em and Randy @ Marine Drive does our service .

Anybody using Amsoil or any other brands?

Heard from Fountain service they have run Amsoil and Torco at same intervals in sixes and Amsoil looks new at drain compared to dirtier appearing Torco.
Still running Torco in mine, have a case of Amsoil left from Bravo days. May try it out in dry sixes.

I think our MLW18 would be the ticket for your dry sump 6's.

We've been using amsoil mcf for 2 seasons based on bob teagues recommendation, and everything looks brand new at every drain
We change oil about every 10- 15 hrs to be on the safe side.

MCF, is the absolute best ticket! Oh, by the way, its a motorcycle oil.... Lighter viscosity, cooler op temps, and great protection!!!

What is the cost per gallon for your MLW18 and what are specs on it?



I dont doubt Bob for a second, but I've heard in the past that he uses this 10-40 MCF in his race boat and if this is what he basises his suggestion on, I'm a little skeptical about using it in my own pleasure boat for a couple of reasons... First, I'm sure his stuff gets torn down and inspected far more frequently than my pleasure boat ever will. If something is wearing or needs addressing, it will get caught and replaced. Second, I suspect part of why he runs this is to reduce drag (speed increase), but it comes at some cost (protection). Third, I believe Bob's only running 525's in front of those 6's... I suspect Marvel Mystery Oil would work just fine for the light loads those drives see!

Again, the protection part is what makes me a little nervous about using the 10-40 in the drives. I believe it only has a API GL-1 rating and AMSOIL even says not suggested for use where a GL-4 or GL-5 fluid is required. I would think the AMSOIL Synthetic Marine Gear Lube might be a better fit and offer better protection, but there would be increased drag (over the MCF) from the increased viscosity...

I'm not saying the Amsoil MCF is bad to use, I'm just voicing my concerns for discussion.

10 - 15 hours behind 700 hp ? ran 1000s thru Teague platinum + and did'nt change fluid at 10 hour intervals :drink:

The MLW18 is a 50-60w GL5 and sells for $80.00 a gallon.

Gear Oil
 

Torco does not have the film strength of Hi-Perf oil at higher temps. Torco is a bit thinner but definitely not the longevity of Hi-Perf due to Hi-Perf's greater film strength. Hi-Perf IS allowed for use in the MC8 drive without voiding the warranty. I know it's better in VI's on high HP apps. The upper gears last much longer. Perhaps the synthetic Torco is better.

Where is the best place to buy Torco oil in 5 gallon containers?

I've historically bought my Torco products from Autopartsdealer.com.