Best oils and fluids?

GLynch

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Joined
Nov 23, 2016
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15
Hey all looking to do a full fluid change on my 04. Just wondering what you guys would recommend for supercharger oil, engine oil, tranny oil, and differential oil. Also what spark plugs would you recommend? The car has 3.00 pulley, tune, exhaust, CAI if it matters.
 

BoostedSVT03

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Sep 25, 2005
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New Mexico
Royal Purple or Pennzoil Platinum 5W-30 for engine
Royal Purple Gear Oil
Castrol Transmax or GM Synchromesh for the trans.
Gm/Fomoco supercharger oil
 

GLynch

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Nov 23, 2016
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Is there a specific weight for gear oil and trans oil or is it just one weight that each mabufacturer makes
 

BlksvtCobra01

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Apr 10, 2008
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Ohio
Gear oil should be 75-140. Trans fluid people use synchromesh or I used Amsoil sig series atf.


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hotcobra03

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Mar 11, 2007
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7,497
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poteet,texas
How many miles?

I'm 396k

Castro gtx 5/20 6qrts plus 1 bottle stp oil treatment since new

Trans was refilled @40k when front cover was off for retainer sleeve..Un touched since

Eaton..@200 refilled with mobile 1 oil.
Untouched since..checked recently was full and clean

Rear..basic synthetic and posi traction fluid

For me just using a quality named brand is enough..
 

Bdubbs

u even lift bro?
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Jan 8, 2010
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MN
This year I switched to Amsoil ss 10w30, mostly because I run e85 and 21 psi. Before that it was royal purple hps 5w30. I've had great luck with royal purple syncromax in the t56.
 

GLynch

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Joined
Nov 23, 2016
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15
The car has 94000 miles and I just recently picked it up just making sure that when it comes out of storage this summer that all the fluids are new and fresh.
 

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