Texastoad
Member
When should I replace the OEM spark plugs and should I go back with the same plug?
09 Yukon 72K 5.3
09 Yukon 72K 5.3
OEM spark plug replacement
- Thread starter Texastoad
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^^^ditto
Smokymance
Boosted
stock wires/ stock plugs...youll see no difference in swapping
X8.
If you want a good cheap plug NGK Tr5
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