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In the Canadian Manual p 10-4 as follows


*1 Cold areas *2 Standard
Item Model Battery
Manual transmission 12V-40AH/5HR,
12V-52AH/5HR *1
Automatic transmission 12V-48AH/5HR,
12V-52AH/5HR *1
Alternator 12 V - 100 A
Starter Manual transmission 12 V - 1.4 kW
Automatic transmission 12 V - 1.8 kW
Spark-plug number NGK Trailing side RE9B-T *2
Leading side RE6A-L, RE7A-L *2

Questions:

1, Is it all RX8 destinated to Canada will automatically classified as cold area ?

2, I tried to identified what kind battery installed, there is no markings on the battery. If a higher power battery 12v52AH installed, may be a hotter plug installed as well.

ZoomZoom

All of Canada is classified as a cold climate country.