Differential Oil selection

[geniushanbiao]

I remember that last year I changed the differential oil on my 99 beetle 2.0 with 01M trans. I see you guys talking about the 02J manual trans use only GL-4 oil but don't use GL-5 oil. I'm wondering if this is the same case that happens on the differential oil on my beetle. I remember that I used the super tech 75W-140 synthetic gear oil I bought from walmart. It is a GL-5 oil. Do I need to flush with GL-4 oil?

[D2Beetle]

GL-5 is bad for brass parts, as it causes them to deteriorate; if it were me I would drain and replace it with GL-4; my choice being Red Line or Amsoil.

[Amsoil]

Your vehicle calls for a GL-4 gear lube.


PRODUCT DESCRIPTION
AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is a premium blend of the finest synthetic base oils and advanced, high-performance additives. It is formulated specifically for maximum protection in demanding manual transmission and transaxle applications where an extreme-pressure GL-4 gear lube is specified, including those where high-horsepower/high-torque engines and towing or heavy loads increase transmission stress.

AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube helps prevent the thinning effects of mechanical shear. It is formulated to maintain its viscosity and superior film strength for consistent, long-lasting wear protection. Synthetic Manual Transmission & Transaxle Gear Lube excels in hot and cold temperature extremes that exceed the limits of conventional mineral oils. It protects against rust, keeps seals soft for long life and is compatible with brass synchros for smooth synchromesh shift quality.

Ideal for NV-4500 Transmissions
AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is a thermally stable, extreme-pressure formulation that resists heat, oxidation, acid build-up and varnish. It is the ideal gear lube for high-temperature applications, including the New Venture NV-4500 transmission, which retains heat due to its cast iron housing and is often subjected to heavy loads and high torque from turbodiesel engines.

AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is the replacement fluid for GM part #12346190 and Chrysler part #4874459 (Chrysler specification #MS-9070).

Ideal for Muscle Car Transmissions
The extreme-pressure design of Synthetic Manual Transmission & Transaxle Gear Lube reduces friction, heat and wear. It withstands the high horsepower and quick shifts common to muscle cars equipped with large-displacement engines.

Ideal for Front-Wheel Drive Transaxles
The advanced synthetic formulation provides superior protection for gears and bearings in front-wheel-drive transaxles.

Excellent for Service Centers
AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is a versatile transmission and transaxle lubricant. It reduces inventory needs, is readily available and is cost-effective compared to vehicle OEM-branded products.

Performance Features


• Reduces friction, heat and wear
• Superior high temperature stability
• Resists heat, oxidation, acid build-up and varnish
• Lasts two times longer than conventional petroleum oils
• Improves cold-weather shifting

Applications
Recommended for synchronized manual transmissions and transaxles that require 75W-85, 75W-90 or 80W-90 viscosities and any of the following performance specifications: API GL-4 and MT-1, ZF TE-ML 02B, 16A, 17A and 19A, Chrysler MS-9070 and MAN 341 ML. Recommended for use in NV-4500 transmissions, and replaces GM part #12346190 and Chrysler part #4874459.

Meets GL-4 performance specifications required by some models of Acura, Hyundai, Infiniti, Kia, Land Rover, Lexus, Mazda, Mitsubishi, Nissan, Subaru, Suzuki, Toyota, Volkswagen, Hino Mitsubishi-Fuso, and Zetor.