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high mileage Seafoam treatment?
I have an 87 4runner with 172,000 on on the 22re and was wondering if because of the high mileage, would the seafoam do more harm than good? I just got the truck and would like to get it in top running shape. I am planning a 1200 mile trip soon. If the treatment would be advisable, where on my engine do I pour in the seafoam? Also, what kind of O2 sensor would you guys recomend and where could I pick one up? I don't think the one in my runner has been changed.
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