techs at oil change never torque down the filter

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Believe it or not, small airplane shops will use a torque wrench on the oil filter. The filters have a nut on the end like a K&N. After they're torqued to spec, they're also safety wired in place so they can't come loose.
 
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But does anyone know the torque specs for the oil fill cap? Any make or model will do.

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170 ft/lbs
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I thought it was printed on the cap: 710
 
The filter housing on a Mazda 6i / 3S / Mazdaspeed 3 & 6 have torque specs of 265 in/lbs. Due to the nature of this beast, I follow that to the letter. But...tradtional filters I just hand tighten and then wrench an additional 1/4 turn. Any tighter and they can be a biotch to get off.
The last time I took a car (2000 Sentra) to a Jiffy Lube, he hand-tightened the filter and it leaked oil directly onto the exaust pipe, making for an embarassing cloud of smoke at stoplights. IMO, they need to be a little tighter than hand tight....or the techs need to have stronger wrists.
 
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