Best heat range spark plug

Joined
Mar 1, 2009
Messages
192
Location
Colorado springs CO, USA
For your corolla Denso or NGK is the best choice comming from lots of toyota experience, if you want cheap you can get NGK G power platinums from NAPA for around 2-3 dollars each
 
Joined
Aug 21, 2008
Messages
25,050
Location
ON, Canada eh?
Get the hottest temperature spark plug you can get away with for your car without it pinging. It should return better fuel economy and less emissions IMO. NGK/DENSO are best left for the asian cars like Toyota, Honda, Hyundai etc. AC/DELCO is best left for GM products Autolite is best left for Ford products BOSCH is best left in the trash bin IMO and replaced with NGK, but I don't wanna upset the Germans on the board so keep it on VW's Mercedes etc...
 
Joined
Mar 1, 2009
Messages
192
Location
Colorado springs CO, USA
NGK/DENSO are best left for the asian cars like Toyota, Honda, Hyundai etc. AC/DELCO is best left for GM products Autolite is best left for Ford products BOSCH is best left in the trash bin IMO and replaced with NGK, but I don't wanna upset the Germans on the board so keep it on VW's Mercedes etc... [/quote] x2 on the other 3 brands, but I can say Ive got Denso Irridiums in my Land Rovers with great results...
 
Joined
Sep 19, 2008
Messages
2,552
Location
Pennsylvania
I ran Bosch platinums in my Chevy 5.7 liter pickup for years. Never a problem. Easy starts, excellent mileage. These were the satndard plugs, not those multiple electrode things they sell. Bosch has, I understand, one of the lowest firing voltages of any plug.
 
Joined
Sep 5, 2006
Messages
19,479
Location
Chicago Area
We don't use Bosch anymore, unless they are vehicle specific stock plugs. BTW,platinum tips have absolutely nothing to do with the heat range. Use the factory heat range plugs. Your objective and goal is that they stay clean under all conditions. If you are racing or highway driving exclusively, you can go one heat range colder.
 
Joined
Jun 5, 2003
Messages
23,160
Location
Apple Valley, California
I've always ran Champions in everything and been happy. I put some Autolites in my Jeep last time and they seem to run smoother than the Champions ever did. I've got about 15K on the Autolites now and plan on going another 15K.
 
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