I ran the thing around with a 3/8" ratchet for a while before pulling the breaker out. I would not recommend using a 3/8" square drive if the dealer overtightened the oil filler cap. It's better to use a hex instead, I think it's 27mm. I'm giving it 3 stars as I'm sure it would work great if the cap wasn't so tight it's only rated for 25N/m and this wrench would sure take it off easily if tightened with it lots of torque.
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