Quote:
Originally Posted by JohnJL
Huh, all the platinum plugs I recall seeing in the past had fine wire electrodes, I assumed these burned off. They look very different to anything Ive seen before.
In with the WR7DCs.
Ivan, are the W4CC really 3 ranges hotter? Why the difference due to cat or not?
Thanks!
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The Bosch plug heat range is higher number is hotter and lower number is colder. The WR7DP is not a true platinum plug and is reflected in the ( cheap) price. Look at the price of a set of say W3DPO which are true platinum and you will see the difference. I agree with retro that other than looking like they have been in there for a while they look fine but also agree they are uneccessary and would just stay with either the WR7DC Bosch or a BPR6ES Ngk Richard