NPG-001 Posted March 1, 2010 Share Posted March 1, 2010 Hello I need your advice on my GS400, want to change spark plugs. What spurk plugs are more economic and good for my car? here are they all of them are DENSO: Iridium Power Resistor Plug Double Platinum Platinum TT Iridium Long Life Quote Link to comment Share on other sites More sharing options...
2JayZ Posted March 10, 2010 Share Posted March 10, 2010 HelloI need your advice on my GS400, want to change spark plugs. What spurk plugs are more economic and good for my car? here are they all of them are DENSO: Iridium Power Resistor Plug Double Platinum Platinum TT Iridium Long Life Replace with the exact plug that came in your car from the factory. OEM manufacturer and type is the best choice. Quote Link to comment Share on other sites More sharing options...
BillH2 Posted March 10, 2010 Share Posted March 10, 2010 I installed a set of Powermaster plugs. IMO, they delivered nothing in the way of power. As a side bonus, they reduced my mileage 1.5 MPG. Stay with the stock plugs! Quote Link to comment Share on other sites More sharing options...
locotrucker Posted August 29, 2010 Share Posted August 29, 2010 Hello I need your advice on my GS400, want to change spark plugs. What spurk plugs are more economic and good for my car? here are they all of them are DENSO: Iridium Power Resistor Plug Double Platinum Platinum TT Iridium Long Life I have heard that these new "e3" spark plugs are really great. I haven't tried them yet but probably will soon. They cost about 7 dollars a plug but if they perform like they claim they will then it will be worth the money. Quote Link to comment Share on other sites More sharing options...
TRDGS300 Posted September 22, 2010 Share Posted September 22, 2010 oem is the way to go. go to an auto parts store and get the ngk's. they are about 4 bucks a pop Quote Link to comment Share on other sites More sharing options...
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