Triumph Technical Service Bulletin
Borg Warner Automatic Transmission Fluid Level Check- Stag
Due to fluid splash and frothing in the dipstick tube on Borg Warner automatic transmission units, it is very often difficult to obtain consistent fluid readings.
As a result of this, a new fluid level checking procedure is recommended as follows:
Run the vehicle at least five miles or until the transmission unit has reached its normal operating temperature, then park the vehicle on level ground, apply the handbrake and move the selector lever to 'P' (Park).
Switch off the engine and within a half a minute check the fluid level with the engine switched off.