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SL/R129: Spark Plugs - Switching from Platinum to Double Platinum?

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Old May 18, 2020 | 08:42 PM
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R129
Spark Plugs - Switching from Platinum to Double Platinum?
Hi all. 2000 R129 with 37k miles here. Are there any considerations going from Single to Double Platinum spark plugs?

I just fixed my valve cover gasket leak and figured it's also time to swap out the spark plugs and wires. As I expected, I noticed oil had seeped down from the valve cover into the spark plugs. No biggie - these should be changed anyways.

However, I noticed the spark plugs were the Bosch OEM Platinum plugs - I'm assuming these were the original plugs from the factory and have never been changed! Anything to take into consideration on the M113 R129 engines?


Spark plugs - Single vs Double Platinum

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