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05-31-2009, 10:48 PM
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#31
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Registered
Join Date: Feb 2008
Location: Michigan
Posts: 578
2007 Sunsation Dominator SS
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Quote:
Originally Posted by HotPursuit
The question was ask what oil would be the best!! I ran 1100+ HP on #3s and was doing the rebuilds,, even was making large shafts to upgrade the 3s&4s..
They would only live with amsoil!!! Not Mercs green crap and Royal Purple was worst!!
and Ran that Shadow Cat at 155-165!!  |
You are so right about Royal Purple, its junk! It doesn't even meet initial viscosity requirements, which means until its hot, its not even protecting properly. AMSOIL is the way to go!
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06-04-2009, 01:21 AM
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#33
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Platinum Member
 Platinum Member
Join Date: Jun 2004
Location: Frankenmuth
Posts: 4,075
272 baja/99 mph so far/1000 plus hp
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AMSOIL
500 hp or less,you can run anything,merc hi performance,what ever.500-750 hp,minimum of a synthetic and shorten change intervals.
Start making some hp (750 plus),AMSOIL severe gear,cryo and polish the gears,change it OFTEN (mainly to remove metal and debris). I tested ALOT using royal purple and I learned more than anything that it was less than ideal for high hp applications. I also found the thicker 75/140 royal purple seemed to slow boat down over the thinner stuff and gears failed just as fast although I never did a true back to back test on the same day as far as the speed difference,Smitty
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06-05-2009, 10:25 PM
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#34
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Registered
Join Date: Jan 2003
Location: ohio
Posts: 95
1997,sunsation,25,aggressor
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Quote:
Originally Posted by articfriends
AMSOIL
500 hp or less,you can run anything,merc hi performance,what ever.500-750 hp,minimum of a synthetic and shorten change intervals.
Start making some hp (750 plus),AMSOIL severe gear,cryo and polish the gears,change it OFTEN (mainly to remove metal and debris). I tested ALOT using royal purple and I learned more than anything that it was less than ideal for high hp applications. I also found the thicker 75/140 royal purple seemed to slow boat down over the thinner stuff and gears failed just as fast although I never did a true back to back test on the same day as far as the speed difference,Smitty
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What visc amsoil ? I'm building a XZ drive with cryoed and polished gears ,I was going to switch to an XR but my XZ lasted 2 years behind 800hp so why switch.!.? I'v read some of your post on testing. great info! My new drive guy said to run pure synthetic.
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06-06-2009, 12:18 AM
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#35
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Registered
Join Date: Feb 2008
Location: Michigan
Posts: 578
2007 Sunsation Dominator SS
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Quote:
Originally Posted by risingsun
What visc amsoil ? I'm building a XZ drive with cryoed and polished gears ,I was going to switch to an XR but my XZ lasted 2 years behind 800hp so why switch.!.? I'v read some of your post on testing. great info! My new drive guy said to run pure synthetic.
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AMSOIL makes a "marine gear lube", which is a 75/80w-90. Now, if you've got some rediculous HP, you can use the Severe Gear 75w-110, or Severe Gear 75w-140.
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06-07-2009, 12:52 AM
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#36
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Chris
 Gold Member
Join Date: Sep 2005
Location: Snohomish, WA
Posts: 1,359
2009 Nordic Heat - 600sci - Whipple Stage X - SCX drive
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I like this stuff better than the Amsoil I used to use.
http://aerospacelubricants.thomasnet...-21?&forward=1
Picked up almost 100 rpm in back to back testing.
Chris
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06-07-2009, 05:00 PM
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#37
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"Pure-Play"
Join Date: May 2007
Location: Kirkland, WA
Posts: 219
28 Daytona
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I just switched to Amsoil ( http://www.amsoil.com/storefront/agm.aspx) from the Merc HP lube and I think that I lost some rpm/speed. Anyone know the viscosity difference between the merc lube and the Amsoil?
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06-07-2009, 07:20 PM
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#38
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Charter Member #1055/Moderator
 Charter Member
Join Date: Feb 2001
Location: CNY
Posts: 4,060
2002 Sonic 386
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I have read the study that racerngr1 posted the link for. It is very informative. Short story:
1-Amsoil
2-Mobil 1
3-GM Synthetic Gear oil
I am running Mobil 1 as its great oil and easy to come by. And I had a couple cases lying around. I won't run merc hp as it is a conventional oil priced higher than a synthetic. What a rip. For the guys running real power, the best oil will be application specific. There is no one perfect oil for everyone.
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06-09-2009, 02:42 AM
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#39
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Registered
Join Date: Nov 2006
Location: Corona, CA
Posts: 479
29 Fountain
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http://www.amsoil.com/storefront/agm...=90&zo=1698533
What's nice about this product is it's designed to retain viscosity with up to 10% water contamination.
I'm an Amsoil dealer and can help purchase if need be.
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06-09-2009, 05:18 PM
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#40
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Rob
 VIP Member
Join Date: Aug 2001
Location: Mississippi
Posts: 20,713
Hustler 388
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Quote:
Originally Posted by Racerngr1
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Im interested in a 5gall pail, I guess they would drop ship from the closest warehouse to me?
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