M/T - Hard Shift In Low Temperatures

89mazda04

Category Applicable Model/s
7 RX-7, 929, &
B Series (M/T)
Subject Bulletin No. 062/89
HARD SHIFT IN LOW TEMPERATURE Issued 6/6/89
Revised
DESCRIPTION

In order to improve shift feeling on manual transmission in low temperature, the gear oil has been changed to SAE75W-90 as shown below.

Previous Oil Current Oil

RX-7 SAE80W-90 ----> SAE75W-90
929 SAE75W-80 ----> SAE75W-90
B2200 SAE75W-80 ----> SAE75W-90
B2600 SAE75W-80 ----> SAE75W-90


VIN OF PRODUCTION CHANGE

RX-7: JM1FC* * * * J0626727 July 9, 1988
929: JM1HC* * * * K0200684 July 9, 1988
B2200: JM2UF113* J0401564 July 9, 1988
JM2UF213* J0401564 July 9, 1988
JM2UF313* J0401564 July 9, 1988
B2600i: JM2UF414* K0746274 November 15, 1988
JM2UF416* K0746274 November 15, 1988

If you encounter vehicles which were produced before the modification and have the problem mentioned above, replace the gear oil with SAE75W-90.

NOTE:
Do not mix engine oil or ATF into transmission gear oil. Also, do not use it instead of manual transmission gear oil since it may result in scoring of the gears and premature wear of shift rods.