| Bulletin Number | Vehicle Make | Vehicle Model | Model Year | Summary |
|---|---|---|---|---|
| No. 28-20 | PORSCHE | 944 | 1984 | List of approved A40 engine oil for classic Porsche vehicles.<br /> |
| No. 27-20 | PORSCHE | 944 | 1984 | List of approved C40 engine oils for Classic Porsche vehicles.<br /> |
| No. 26-20 | PORSCHE | 944 | 1984 | List of approved C30 engine oils for Porsche classic vehicles.<br /> |
| No. 25-20 | PORSCHE | 944 | 1984 | List of approved C20 engine oils for classic Porsche vehicles.<br /> |
| 122-J8E6Y-04 | PORSCHE | 944 | 1984 | List of approved C40 engine oils for all Porsche vehicles for which C40 is allocated.<br /> |
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