The Champion RC12YC is the correct plug for my 95 XJ6 correct? If it is considered a race plug then does that mean my XJ is a race car? LoL.

I am at just a bit over 74,000 miles and not knowing when and if the plugs have ever been replaced thought it would be good preventative maintenance.


Champion Spark Plugs 49776: RC12YC Race Plug 1/pkg | JEGS

 

...only if you race lawn mowers!




I've found the best place to buy the Champion RC12YC plugs is the lawn & garden department at your local "big box" home improvement/hardware store or Walmart. They are about $2 a piece.

Oh, and since they aren't really "long life" plugs like modern platinum, etc plugs, I had read somewhere that the RC12YC plugs ought to be changed out more frequently. How frequently? I have no idea. But since they are so cheap and so easy to access, I change them as part of my annual spring checkup.

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Jaguar recommends replacement every 30K miles.

Here is some info for you.
All this info is on this forum and on Gus's site.

bob

 

Yep , with some refinement I have seen where they are raced at 600 Hp . As I refine my N/A without supercharging or nitro it I hope to get from 250 up to 300 ( less at the on the wheel dynometer ) . Have to get that drivetrain factor to adjust the data points . The local truck performance shop here has a Dyno Day . I'll tell them that it is in fact a truck engine with the over square crankshaft setup . They should be inspired .

 

I walk into my local AutoZone and tell him I need Champion RC12YC plugs and he says, "oh, you have a lawnmower?" Lol..

The new Champions replaced NGK BK R6E GP that were in the car and the idle seems a little smoother. I had a bit of a roughness/skip that also now seems to be gone. Coils are all original and a nighttime viewing didn't show any electrical leakage.

 

Yep, lawnmower plugs

Walmart and Home Depot, etc have them by the loads, very cheap. I often wipe them out when I buy 6 at a time in the late winter and the "Garden Shop" is mothballed.

 

For how inexpensive they are and so easy to replace I will have to keep my eye open for them this fall and stock up.

 

Yep, I replace them annually. Why not, they are so cheap and easy to get to.

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