Red Line Oil's Powerpack synthetic fluid kit for the WRX and STI improves engine efficiency, makes for smoother shifts and generally makes your car run smoother. The most notable component here is the 75W90NS gear oil, which, when used in the WRX transaxle improves shifting by slowing the synchros. This both improves the overall feel of the car and offers greater protection against wear.
The Subaru PowerPacks Include:
- 5 quarts of 5W30 motor oil p/n 15305
- 4 quarts of 75W90 NS gear oil for the transaxle (5 in the STI kit) p/n 58304
- 1 quart of 75W90 gear oil for the rear differential p/n 57904
- 1 bottle of Water Wetter for the radiator p/n 80204
- 1 bottle of SI-1 Complete Fuel System Cleaner p/n 60103
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