Spark Plugs at 60k?

Newer models are ULEV also which is probably hotter combustion for emissions. Mine isn't ULEV

 

I don't know. I did on my Ram once but I was told not to. My plugs were nickel plated and shouldn't gall but I understand why you did.

 

What’s fuel service? A full tank of racing fuel? Send them to the nearest gas station. They might need fuel service.

 

Dielectric lube?

 

I have to with no issues.

 

You mean lube before he f*cks him over? I think he just tried it rough and dry. He doesn’t care about the client.

 

My guess is that it has to do with needing dry/unlubricated threads to make sure you can get accurate torque readings. That might be a more critical issue like on spark plugs, where overtorquing can damage the head.

I also wonder if application of antiseize can cause variations in how heat transmits from the plug to the head. That’s me just guessing though.

 

More heat to the head, that’s what she said. I would think twice about using antisense on spark plugs. Even though you say you been doing it for years you will be over extending your penetration of the plug. Although my wife says that is not a problem.

 

When the dealer bends you over, insist on only genuine Toyota P/N 08887-01206

Just remember, all that stuff you burn off from the valves and cylinders poison your catalytic converters

 

Instructions are written for the "lowest denominator" i.e. people who don't know to reduce the torque value when lubing the threads.

 

Who is "They?" You are installing steel spark plugs in an aluminum cylinder head. I ALWAYS use anti-seize.

 

I think it was more for marketing purposes by automakers. I remember when my grandfather bought his first car with iridium plugs, he bragged about how it didn't need any service until 100K miles beside oil changes.

 

I have run copper plugs over 100k. Back in the days of leaded gas and points/carburetors, after about 20k miles or less the ground electrodes would start eroding and lead fouling would be present. If you wanted your performance car to "perform" a tune up every 12k miles was mandatory. You might get away with cleaning and gapping the plugs a couple of times.

 

I think the variations on torque are likely the reason for not recommending anti-seize on spark plugs. Considering the plugs are expected to be installed for the recommended 120K miles in a high vibration environment, another concern would be the plugs backing out; this would happen on cylinder 1 & 3 on my 5.3L Yukon occasionally when I used too much anti-seize.

 

There were some ford pickups that had ridiculously few threads tapped into the head for the spark plugs. Seems like that blew out spark plugs pretty frequently. That would be an example of an application where you really need to nail the torque perfectly. Too tight, you strip the head, too loose, they back out also (while probably wrecking the few threads on the way out).

 

A dab will do ya!

 

Quite glad for the 100k plugs intervals. If they did it for marketing, then that’s very good reason to want a car. Not that it’s hard to change them on most 4 cyl cars, but front wheel drive V6 engines are usually a horrible amount of work.

That marketing worked so well I just figured all cars had 100k intervals nowadays. Imagine my surprise when we bought our 18 highlander and see they need plugs at 60k!!! Argh!!! And they explicitly state the 60k interval is needed to maintain emissions! I can’t remeber the last car I had that needed plugs as frequently as the highlander.

So I agree, long spark plug intervals aren’t about emmissions. But short intervals are!

 

Replaced my plugs with factory toyota ones at roughly 70k miles as a precaution. Not a difficult job, just gotta remove the secondary air injection thing. Logic is old or failing plugs lead to coils going bad faster, and since I like to tinker, why not change em? Ive replaced coolant, power steering fluid, front and rear diff fluid, transfer case and transmission fluid since I bought it, greased all zerk fittings and basically just gave it a good once *or twice* over.. Mind you, it was a rental car and had 50k miles when I got it. Never hurts to have fresh fluids.

 

My 4runner is about 90k miles. I plan to change mine just to see if I get better gas mileage. There almost 10 years old too