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Hello all. I have a 2005 SE with the 2.7 engine and I am debating on the type of plugs to put in her. I have always used the boshe +4 Platinums open top type (see pic) in my other cars (nissan) but wanted to know if anyone here has experience with these in Magnums? My gas milege is really bad (300mi in 16-17 gal.) and don't know the last time the plugs were changes. She's got 142K on her. Thankyou for any and all help. (^-^)
 

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You got to use the stock plugs. It seems the engine is very particular. Not sure what the 2.7 needs as I have the 3.5. I'd swap the wires too since it has been 142K. Other than that, use Mobile 1 High Mileage oil. I noticed a improvement (mileage and power) after a few months when I switched. :)
 
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