Best motorcycle oil is Castrol Go for almost all the motorcycles.
If you go to the Mazda web site it states Castrol motor oil is used.
CASTROL GPS SYNTHETIC OIL, MOBIL 1 Racing (formerly called MX4T) SYTHETIC OIL, ETC.
If you go to the Mazda web site it states Castrol motor oil is used.
Texas
If it's new vehicle. Then check owners manual. If it's a used vehicle 10w30 or 10w40 Castrol Motor Oil
castrol extra 20W50
always use four stroke motorcycle oil. valvoline, castrol, Honda etc. I use 10 w 40. 20 w 50 is a little too thick unless your motor is worn out. NEVER use oil for cars and trucks.
Castrol 10 30
4 qts 10w30 Motor oil (name is your choice) Recommended: Castrol GTX, Castrol GTX High Mileage
It depend on what oil do you like using. I personally used Castrol 10W40. On my 1998 Ford Expedition XLT.
I use Castrol grand prix 4stroke sae 10w-40 motorcycle oil. I got the oil from wall mart Canadian tire also carrys it.