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Which one?
Mine's a 88 Tx5 Turbo running on Premium unleaded boosting at 10psi. NGK catalogue stated ZFR6A-11 for my car (87-89 model), and ZFR6F-11 or ZFR6FIX-11 for 89-91 model. So the question is can my car being a 87-89 model uses ZFR6FIX-11 Iridium Spark Plugs?
thanks everyone...
Has anyone outhere tried it before?????
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