Hallihallo,
bislang wurde immer bei G80 Hinterachsen darauf hingewiesen, dass man das Limited Slip Additiv nicht vergessen soll. Aus einer Diskussion im Chevy Forum habe ich nun gegenteiliges vernommen, noch mal etwas recherchiert im WWW und bin auf folgendes Statement gestossen:
"Regarding Additives and the G80, the Below Information is from GM......
LOCKING DIFFERENTIAL LUBRICANT (SERVICE INFORMATION) #91-4-109
SUBJECT: LOCKING DIFFERENTIAL (G80) LUBRICANT - (SERVICE INFORMATION)
VEHICLES AFFECTED: ALL LIGHT TRUCKS EQUIPPED WITH G80 REAR AXLE ALL YEARS
Some Light Duty Trucks equipped with Locking Rear Axles (G80) may Exhibit Rear Axle Chatter, Especially When Turning a Corner from a Stop.
This Condition of Alternate Engagement and Disengagement of Clutches in Differential Assembly is usually caused by Contaminated Axle Lubricant.
The Use Of Any Additive In Locking Rear Axles (G80) Is Not Recommended:
Rear Axle Additives are Designed for use in Limited Slip Differentials which are Normally Installed in Cars. All Light Duty Trucks Equipped with RPO G80 Make Use of a Locking Differential and the Use of Additives will Delay the Engagement of the Locking Mechanism and May Decrease Axle Life.
***WARRANTY INFORMATION:
As Specified in Light Duty Truck Maintenance Schedules, Locking Rear Axle Fluid Drain and Refill is Required Owner Maintenance at the First Engine Oil Change. Failure to Drain and Refill the Rear Axle as Specified May Contribute to a Later Axle Chatter Condition. Refer to the Appropriate Light Duty Truck Maintenance Schedule or Service Manual, Section OB, for Further Details on Change Intervals."
Demnach ist G80 nicht gleich G80 sondern bei PKWs und Trucks (zu denen auch der Astro gehört) unterschiedlich.
Da werde ich wohl bei nächster Gelegenheit mal einen additivfreien Differentialölwechsel in Angriff nehmen
Gruß
Olli