Most long life plugs although certified 100K mileage, the 100K are actually pushing at their boundary. I usually change at 80K instead to maintain optimum performance. Once hitting closer to limit, performance will decrease more drastically, the performance, engine, fuel efficiency decrement does not add up to the minimal cost of plugs dragging 20K more.

of course stock cannot last tht long.
changed mine at 20k then bought denso iridium from zeng or xandras bulk purchase. by the time this thread was still fresh.
original means RM150 cost right ?

rm400 compare with rm2x mia sparkplug. i go for rm2x punya. change every 20k for 100k still save money.

LOL.. and they say proton cars cant last long..

I hvnt change my coolant for 60k km ady.. still the coolant looks nicely green and engine works superb..
Timing belt all will change lah cos can see the belt getting more longgar and the sides got a bit of wear and tear ..

Itu your current mileage ke or plugs used 50K liao.

Xan pernah destroy one of the plugs when hitting using near 50K, remember? Zen mentioned his plugs gap already worn quite big by 30K mileage thus he re-gap them. Efficient already decrease drastically after 30K mileage, so I guess, it better to use stock plugs and change every 20K to maintain optimum efficient over 50K mileage (better than using power iridium at 1 go for 50K mileage).

Same philosophy with engine oil mineral/semi vs fs.

This post has been edited by Cavino: Apr 22 2014, 11:31 AM

Plug mia mileage.
Ya, I remember the buaya story. Guess I have to change at next service liao to stock plugs.

new car..sure stable as mountain..wait until 20k mileage onwards

couldnt agree more.. mileage 140k but only change coolant once n still got dark bluish color.. timing belt changed at 108k

yeah n start to change to performance this n that.. greedy for torque or watever.
stock persona only feel good the first 20k.

This post has been edited by Beogatts: Apr 22 2014, 11:40 AM

Ur car settle already meh?

I still looking for "original" power iridium coz somehow I can feel there is a difference in startup, acceleration performance, etc vs stock plugs. A bit hard to downgrade after that. Now I'm ok with PE performance, down want to downgrade its performance further.

Too many fake plugs outside. Anyone got source or not....maybe Kenny can get original, can bulk.

Tag him lah. kennywee92

Not sure if coolant effectiveness is judge by discoloration only (contamination). As we add more water overtime, won't the coolant dilute and provide less cooling thingy?

settle what?
i hvnt go SC wo..find out is the steering cover noise..LOL

Then settle lo.
Ur car manyak problem meh?

so ori cost how much ?

im not sure .. i no theres more than just color to judge its lifespan but when i search around, they say if u Extremely drive in an extreme hot weather often, u Must consider changing coolant fluid yearly.

errr...manyak noise..problem tarak kot

Then u have bought an original Proton car.

Our weather is usually class as severe in all car manufacturers tho. So lifespan vs the limit is usually shorten by 20-50%. Thus for longer life item, I usually change earlier. (My city coolant life span 200K....I change at 100K, plugs 100K...I change at 80K)

Power iridium cost abt RM160-RM200 depending on who sell. Same price between original and fake coz all passed fake as original...that's the problem.

This post has been edited by Cavino: Apr 22 2014, 11:54 AM

indeed..i was amazed that no noise at first and thought i bought a fake proton...

if less noticeable noise wch doesnt affect car problem, better let go..
toyota also will have noise if before reaching 100k mileage