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Product Description

RustX Synergy  C4 SAE 30 is a premium quality Heavy Duty Automatic Transmission Fluid formulated to meet the Allison C-4 specification of Allison  Transmission Division of General Motors, U.S.A. The oil is formulated with highly refined base stocks and performance additives to provide superior thermooxidative stability, clutch friction compatibility, fluoroelastomer seal compatibility, enhanced protection against copper corrosion, reduced foaming and improved low temperature viscosity performance. A unique feature of this product is its excellent filterability and compatibility with 6 Micron Pall filter fitted to Allison Transmissions of BEML earth moving equipments. This increases the filter and fluid life and improves the durability of the equipment.


Application Method


RustX Synergy  C4 SAE 30 is specially recommended for use in Allison Transmission fitted with 6 micron PALL filters in their earth moving equipments. It is also recommended for use in powershift transmissions in off-highway construction, agricultural and mining equipment, automotive, industrial, mobile and marine hydraulic system, power steering units and rotary screw compressors.


Performance Benefits:

  • Excellent filterability
  • Provide extended drain interval combined with greater durability of transmission components due to superior thermo-oxidative stability.
  • Have the desired friction characteristics for smooth engagement/disengagement of clutch to provide a “soft shift feel”.
  • Gives outstanding protection against rust and corrosion


Performance Standards

This oil meets the following specifications :


  • Allison C4 Specifications of Allison
  • Transmission Division of General Motors, USA
  • Caterpillar TO-2
  • Denison HF 0
  • Dexron IID specification of General Motors

Manufacture Approvals

RustX Synergy  C4 SAE 30 is approved by leading

manufacturers, such as :


  • Bharat Earth Movers Bangalore
  • Allison Transmission Division of General Motors, USA
  • M/s. PALL for use with 6 micron filters



 RustX Synergy C4 SAE30

 Kin. Viscosity @ 100ºC, cSt  11.0 - 12.5
 Viscosity Index, Min.  90
Pour Point, ºC, Max   (-) 18
 Flash Point, COC, °C, Min  160



      Rustx Synergy c4 SAE30

Safety Information 

RUST-X products do not contain Lead (Pb), Mercury (Hg), Cadmium (Cd), Hexavalent Chromium (Cr6), Polybrominated biphenyls (PBB), or Polybrominated di-phenylether complying with the re-stricted substances listed in Article 4(1) of the RoHS Directive

RUST-X products are also REACH Compliant for exports to the European Union.