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10-10-2018, 04:36 PM
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#1 |
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Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,524
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Nv4500 fluid-
Getting ready to do the swap. Need fluid. Obviously the OEM Castrol Syntorc is no longer available. Remaining supply is almost impossible to find and the $$$ is ridiculous. I see several aftermarket brands that are advertised as replacements:
Amsoil-Redline-Royal Purple... Cost aside, anybody have any knowledge, experience or opinion on one over the other? |
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10-10-2018, 08:19 PM
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#2 |
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Registered User
Join Date: Mar 2015
Location: South of Pittsburgh
Posts: 425
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Re: Nv4500 fluid-
I’m running redline in 3 different trans right now with no issue. Used the AC delco too
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10-10-2018, 08:21 PM
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#3 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,583
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Re: Nv4500 fluid-
I went straight to the dealership to get mine....but get ready...this stuff ain't cheap...
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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10-11-2018, 09:50 AM
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#4 |
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Registered User
Join Date: Apr 2012
Location: Chatt Tn
Posts: 957
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Re: Nv4500 fluid-
amsoil is cheaper than the dealer crap.
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88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535 |
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10-12-2018, 09:47 AM
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#5 |
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Registered User
Join Date: Feb 2000
Location: Maquoketa, Ia/ Orr, Mn
Posts: 2,963
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Re: Nv4500 fluid-
Amsoil Manual Transmission and Transaxle Gear Lube 75W-90. If you sign up as a preferred customer you'll save 25% over retail, earn points towards future orders for additional discounts and get free shipping with orders over $100. I'd be happy to sign you up and be your sponsoring dealer, the cost is $10 for 6 months or $20/year.
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'51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com |
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10-12-2018, 05:51 PM
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#6 |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,913
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Re: Nv4500 fluid-
The official oil from GM and Chrysler is Castrol Syntorque with AC Delco or Mopar labels on the bottles.
I've used Torco RTF and Castrol Syntorque in my NV4500's. Syntorque is a specialty oil for a single transmission... the NV4500... That transmission, in GM dress, ended production almost two decades ago and was mostly only used in 3/4 & 1 ton trucks in the 1990's to any large degree. Castrol can't make thousands and thousands of gallons of the oil to get the price down to Wally World pricing and there are rumors that it is no longer being produced so it will not be going down in price for that reason as well. One of the important properties of Castrol Syntorque is the slow rate it heats up supposedly because of low friction. It also doesnt attack the oddball composite synchro rings New Venture used in these gearboxes. Torco RTF Gear Oil is a group IV/V oil. It's performance is a very close second to the Castrol Syntorque and it's still being produced. $23/qt from Summit. The Dodge Cummins boys claim it takes 5-6 full power dyno passes to get Syntorque and 4-5 & sometimes 6 to get the Torco RTF up to 140°F in the NV4500. Most other possible oils fall well short of that and neither oil attacks the synchros.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. Last edited by hatzie; 10-13-2018 at 08:48 AM. |
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