Mayf
I thought your neighbor Skip was a lube specialist. Terry Nish in SLC is the
Dist. for Royal Purple.
Glen
----- Original Message -----
From: "Bryan Savage" <b.a.savage@earthlink.net>
To: "DrMayf" <drmayf@teknett.com>
Cc: <land-speed@autox.team.net>
Sent: Friday, June 03, 2005 9:59 AM
Subject: Re: Lubricants, etc...
> Hi mayf.
>
> I would choose a Group 4 base synthetic such as Mobil1, Amsoil, Red Line,
> Royal Purple,
> .... The other major brands (Pennzoil, Valvoline, etc.) use a Group 3
> base.
> See:
> http://www.mobil1.com/USA-English/MotorOil/Other_Products/Gear_Lubricants.aspx
> I'd use Mobil1 75W-90 because it will circulate and cool better at high
> speed than 75W-140.
> My '99 Ford factory shop manual specifies a change interval for the
> differential under heavy duty
> usage to be 5,000 miles if petroleum lube is used and if synthetic is used
> it doesn't ever need to be
> changed.
>
> Other oil's do not have the extreme EP additives (sulfur based) that
> hypoid gears must have.
> If your differential used spiral bevel gears, Synthetic ATF would be my
> choice for a lightly
> loaded application like yours.
>
> The Group 4 base stock normally used is PAO, PAG is much better but
> extremely expensive.
> The Group 3 base stock is petroleum.
>
>
> Bryan
>
>
>
> DrMayf wrote:
>
>> Time for a poll of the real racers. What, in your opinions is the best
>> diff
>> lubricant for a lightly loaded ford 9inch? Spool. What is an acceptable
>> oil?
>> Sunthetic or not?
>>
>> Engine oil?
>>
>> Auto tranny fluids?
>>
>> As you can see, it is going together albeit slowly. The World's Fastest
>> Sunbeam (wannabe) is planning on making an appearance at WOS if the lake
>> dries sufficiently...
>>
>>
>>
>> mayf
|