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5718 rear portal
- Thread starter richard_a
- Start date
- Joined
- Jul 5, 2003
- Messages
- 4,064
- Location
- Laag Zuthem
- First name
- Renze
- Machinery:
- 1976 5718
1978 5718 35kmh: Work in progress
1967 3011
- Joined
- Jul 5, 2003
- Messages
- 4,064
- Location
- Laag Zuthem
- First name
- Renze
- Machinery:
- 1976 5718
1978 5718 35kmh: Work in progress
1967 3011
Yes, STOU viscosity is measured at engine operating temperature, hence the much lower index number than the gear oil , which is measured at room temperature. These oils are about the same thickness.
80w/90 gear oil is better though, because it absorbs less humidity than a STOU oil. STOU oils can take more heat. When used in a transaxle, the STOU gets warm enough to keep the humitity out.
80w/90 is best, 15w/40 will work too but will age quicker in a cold gearcase.
80w/90 gear oil is better though, because it absorbs less humidity than a STOU oil. STOU oils can take more heat. When used in a transaxle, the STOU gets warm enough to keep the humitity out.
80w/90 is best, 15w/40 will work too but will age quicker in a cold gearcase.
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