C5 diff/tranny fluid changes - When - Time or Distance?
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 1,157
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From: Eastern PA
C5 diff/tranny fluid changes - When - Time or Distance?
This may have been beaten to death via other threads, but I find all the advice a bit confusing. When should one change their diff and tranny fluids in a C5? Excluding how much one beats on the car, is it a matter of time or distance?
In my case, I have a 2002 C5 coupe, with 3.90s in the rear end. The tranny was built by forum sponsor, RPM Transmissions. Both are supported by cooling systems. Since last fluid change in spring 2017 (Royal Purple products), I have put three track days (all in 2017) and 10K total miles on the car. For the last 24 months, I have not run any HPDE/track days and have driven it only 4K of the 10K total, mostly in sub-highway driving. That limited operational trend looks to unfortunately continue for the foreseeable future.
Past professional advice was to change the driveline fluids (if not tracking it) every 2 years or 24K miles (whichever came first). I'm at or just beyond that time recommendation. However, it may be another handful of years before I reach the distance number.
So, whattayathink? Should I be focused on the time the fluids have been subject to use or shoot for the distance?
Thanks in advance!
In my case, I have a 2002 C5 coupe, with 3.90s in the rear end. The tranny was built by forum sponsor, RPM Transmissions. Both are supported by cooling systems. Since last fluid change in spring 2017 (Royal Purple products), I have put three track days (all in 2017) and 10K total miles on the car. For the last 24 months, I have not run any HPDE/track days and have driven it only 4K of the 10K total, mostly in sub-highway driving. That limited operational trend looks to unfortunately continue for the foreseeable future.
Past professional advice was to change the driveline fluids (if not tracking it) every 2 years or 24K miles (whichever came first). I'm at or just beyond that time recommendation. However, it may be another handful of years before I reach the distance number.
So, whattayathink? Should I be focused on the time the fluids have been subject to use or shoot for the distance?
Thanks in advance!
