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I have a 03 civic ex sedan
plugs are bosch platinum 4030
couple Q's
1 do i need to change vtec fluid if so where what how
2 whats the best time to change plugs before or after oil change?
3 if I am switching to synthetic oil on my next oil change does that affect anything?
4 what should I be extra careful of if im doing this for the 1st time (besides letting something fall in the engine, and not using anti seize lube)

 
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1. throw away bosch plugs, they dont belong in a honda
2. buy some NGK v-power plugs and install
3. tighten them no more than 20 ft/lbs
4. do NOT use anti seize, do not lose the coil pack nuts

 
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how bad are bosh? for 10$ for 4 it seems like a good deal
what about
AUTOLITE Platinum Spark Plugs

 
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....

 
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howcome you said not to use antiseize?

 
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X2 With what Gear said NGK is standard for Honda's. Everything else is just a gimmick.


There is no such thing as VTEC fluid.

 
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what denso iridium are the best for honda.bosch will make your car run like ****.it doesn't matter which you do first oil or plugs.and it will have no consequences to switching to synthetic unless your car is burning oil now.and the v-tech fluid has to be changed by a honda dealer call and ask for a qote

 
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with anti-seize you will not be able to torque the plugs properly. and spark plugs never get stuck anyway so its not needed. with 20 ft/lbs of tightening force, they should never get stuck. also do not change the plugs when the engine is hot.

 
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thanks, good to know.

 
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Yes, I agree. Denso Iridium ik20's Are the best for our cars. They run about $10-15 each depending where u get them.

 
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denso iridium ftw if you can afford it. otherwise copper ngk is good too. denso has smaller center electrode that requires less power to make the same spark. so electrical system does not work as hard.

 
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True that.

 
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Vtec fluid hah..I never change mine vrooom

 
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I thought that Bosche are great...

 
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you dont need denso iridiums. Just get platinum Densos or NGK that were in the car from honda, not like your boosting.


Part No. 7100 from NGK

 
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No, No. It's not true. I know what you're saying, but I added just one ik20 plug and from then on, i noticed the difference. Please listen to your peers and put in the right thing: denso iridium ik20's. $10-15 but it's so worth it! lol..

 
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lol I dont come back for awhile and the first thread I see is this.....vtec fluid? Cerealy?

 
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okay got some v powers! hehe what about wiring harness should this be replaced? there is a good deal at autozone 20$ rebate

 
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i like the ngk iridium. They are a bit cheaper than denso and i like them better. Just my $.02

 
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wire harness? you mean the spark plug wires (assuming you have 2000 civic or below)? yeah its a good idea to replace em if they look old. the carbon inside breaks down over time.

 
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Get the ik20's. Or for older models it's the ik16. Be wise. I've compared to v-powers already, they suk.

 
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Wow.. I read the OP's post on VTEC fluid. I giggled.

 
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Shouldnt always go according to how they look, lol my dad does that.. but really resistance is key

 
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make sure you set the gap correctly. im guessing you dont know anything about gapping spark plugs, since someone talked to into believing you had vtec fluid. :/ i believe the gap should be 44

 
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also, do one at a time so u dont mix the coil packs..its probably not a big deal, but better be safe then sorry

 
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Im curious, how often should you replace the plugs. Not the spark plugs themselves, but the plugs that go over them.

 
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i mix mine all the time no problems. keeps the ecu on its toes lol

 
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Again, you dont need them, and you wont feel a difference, the thing with iridium is that they can hold a hotter spark. Iridium is not a strong metal like platinum, but platinum has a lower melting point PER-SAY than iridium, which is why most people who run turbo chargers run iridium. There really isnt a smoother difference, nor will it make your car any faster, the only thing it will do is burn a whole in your wallet if you have to change them every 30k to 50k miles. Also i recommend using a small amount of anti-seize, just a dab will do.

 
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How much are the NGK and where in Canada can I buy them?

 
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What commercial auto parts store are in Canada?