What do you run in your br. drive for oil?
 

I allways ran 75/90 royal purple it never let me down and when the drives were looked at thay said every thing looked good. but it allways smelled burnt when I changed it.

Merc Hi-po.. Never smells burnt..

8 years with Mobile-1 75/90 synthetic gear oil.
Looks like new every time I change it (1-2 times per season)

Amsoil marine gear lube.

same here.they claim up to 10% water with out loosing its vos

I have always run Merc HP but pretty much everybody racing has switched to Amsoil.

Mercury HP is the way to go.:D

Merc HP and a BIG drive shower

Amsoil. :D

Mobil 1

Because its faster, or because it's more durable?

I run merc hp. If I switched I would probably use Mobil 1. Most of the specialty oils are made from mobil 1 base stock, then add their own additives. Amsoil does I think, and probably Royal Purple also. Basically I think they are all high quality and you probably can't go wrong with any of them. Its like choosing between Lambo or Ferrari. I prefer a lambo, but not because it's better, I just like it.

Same here, and no need for drive showers when using it!

Merc. high Performance.

Amsoil

Merc HP for me too. Change twice a season. Im of the opinion that gear lube in and of it self is not enough to save your drive. There isnt a magic lube. Why spend more i guess? Its all on the driver.

Maybe in a stock application,run hard or allot of power it will still heat up

I run with drive showers

With Drive Showers. :hitfan:

m-1 75-90

I broke a drive with Amsoil, I broke a drive with Merc HIPO, I broke a drive without any oil. Moral of the story is I broke several drives.

Thats funny:evilb:

Does anyone run royal purple?

If they build it, It will break.

I run Royal Purple after having drives built up by Mr. Gadgets. It was his recommendation.
I change oil twice a year. Only put on 15-20 hours before changing.

That is the one product I would never use. It doesn't even meet some specifications. Read the following, and you probably wouldn't either.

http://www.amsoil.com/products/gearl...hitePaper.aspx

Download the PDF file

From what I understand Jason there is no one in Texas that can build hi-perf drives bravos that is.When someone has to send their drives for rebuilds then its no wonder you break drives. But then again, I have seen a boat that keeps coming back with the same drive breaking cause the owners son does'nt know how to run the boat. But merc drives are designed to run with merc hp oil. If you do change your oil to a different manufacture, make SURE you clean the monitor bottle and the line out before going to a different blend of oil.

I run royal purple but that's what Konrad says for my drives. I changed it after 10 hour break in period. It was so clean, it looks like I could have sold it as new.

Usually is I would think. Beyond minor wear and tear there isnt any lube thats going to save your drive from your power and or poor manufacturing of the internals that would lead to a shaft snaping or something. IMO run what the manufacutre recommends.

FREE! 4 unopend quarts of Red Line Shock Proof Heavy. Chicagoland area preferred.

Amsoil with drive showers for me.

:cool-smiley-011: Mobil 1 75W-90 Synthetic Gear Lube

Here a drive, there a drive, every where I break a drive.

Amsoil has been around decades before Mobil 1. Plus theres many other products they cover.
I tested side by side comparisons. 6000 rpms 1200 hp, amsoil in the port engine and moblie 1 in the starboard,26 degree differance between the two. Swaped oils from one port to starboard and the differance
followed. I was hoping they would hold the same temp its alot cheaper when your not paying shipping and can purchase moblil 1 from any autostore. I run Amsoil in the engines,drives,transmissions,power steering and trim pumps.
Also Amsoil makes many different levels of synthetic oils at the same weight.Big money difference!!

I'd run redline if I had it and used to, just ran out and realized I could do an oil change in 15 minutes with M-1 versus waiting overnight for the shockproof to drain:D

I run royal purple for years , Other than just plain breaking a shat or housing the drive gears and bearings looked good. But the oil allways smeld burnt. I run verry hard !! I change my drive oil every other oil change. There is no filter in a bravo. so I beleve the more you chang it the bet. I have put 260 hrs on one pair of drives with 500 efis in front of them. But still dont like that burnt smell.

It probably has that burnt smell because it really is getting too HOT! Therefore, that should actually tell you your drives aren't really getting the protection that they deserve. Heat obviously means friction, and we all know where the friction is generated.