Mazda RX-8 2004 — technical service bulletin
Bulletin 0300403 · NHTSA communication 10005526 · issued Dec 18, 2003
Technical service bulletin
communication type
Power Train
component
2004
model years
1
vehicle entries
Official summary
The manual for the rx8 recommends using api service gl-5 sae-90 oil for differential lubrication. Gl-5 sae-90 oil is not easily found in the north america. The oils have been tested and approved for use in the rx8 with no loss of performance or increase in noise. *mn
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.