Re: Best Spark Plugs Ever Used
 

I use NGK in my Yamaha, it did nOT seem to like anything else??

My truck has AC Delco in it and believe they are factory. I will be tuning soon as with the new gas and almost 75,000 miles I think it is time.

I have always use Auto lite, I find they work great and I am old school were I tune every spring and change the plugs, so there only there at tops 20,000 mile

But I have used Champion and AC in the past with out problems!

Bottom of my list is Awfull Crummy (AC)

Re: Best Spark Plugs Ever Used
 

I use NGK in my Yamaha, it did nOT seem to like anything else??

My truck has AC Delco in it and believe they are factory. I will be tuning soon as with the new gas and almost 75,000 miles I think it is time.

I have always use Auto lite, I find they work great and I am old school were I tune every spring and change the plugs, so there only there at tops 20,000 mile

But I have used Champion and AC in the past with out problems!

Bottom of my list is Awfull Crummy (AC)

Re: Best Spark Plugs Ever Used
 

Skools - I use NGK BU8H's in my Merc and they've been great!! Cost $2.19 each and I haven't fouled one yet. This is the plug that all the screamandfly members recommend for the mercs. Now . . . I'm kinda curious to see what I've been missing.

Re: Best Spark Plugs Ever Used
 

Skools - I use NGK BU8H's in my Merc and they've been great!! Cost $2.19 each and I haven't fouled one yet. This is the plug that all the screamandfly members recommend for the mercs. Now . . . I'm kinda curious to see what I've been missing.

Re: Best Spark Plugs Ever Used
 

BS, I'm using the same in my Merc. I also went from Bosch to NGK in my M3 (car) and like the NGK's much better. I know of people that tried the Denso's in their cars and they didn't perform as well, guess it depends on the car too.

I think for performance the non- precious metal plugs are better. Platinum plugs and such are better for longevity, the reason lots of cars first tune-up is 100k miles.

Re: Best Spark Plugs Ever Used
 

BS, I'm using the same in my Merc. I also went from Bosch to NGK in my M3 (car) and like the NGK's much better. I know of people that tried the Denso's in their cars and they didn't perform as well, guess it depends on the car too.

I think for performance the non- precious metal plugs are better. Platinum plugs and such are better for longevity, the reason lots of cars first tune-up is 100k miles.

Re: Best Spark Plugs Ever Used
 

Got the denso's in my 78 yamaha 650 XS motorcycle. With that old engine they were the only plugs that would keep carbon from building up too much. No need for them in the I/O.

Re: Best Spark Plugs Ever Used
 

Got the denso's in my 78 yamaha 650 XS motorcycle. With that old engine they were the only plugs that would keep carbon from building up too much. No need for them in the I/O.

Re: Best Spark Plugs Ever Used
 

autolites all the way worst i ever had was ngk all i could get for my dirt bike changed many of them

Re: Best Spark Plugs Ever Used
 

autolites all the way worst i ever had was ngk all i could get for my dirt bike changed many of them