Reply to "Opinions (of better, facts) on Valvoline oil additives"

tallpaulMember

Ah yes. The inlet valves. Very important. I believe the Redline SI-1 is supposed to help that. The purpose of the SI-1 is largely to counteract less than perfect fuel quality/additives.

Back in '77 I bought a new Ford pickup and had to have it in under warranty for valve work twice. Saw one of the valves and it had huge deposits of black stuff caked on very think and rough. This was when no-lead fuel was just beginning, so maybe they had not gotten the technology down at that time, and the emission equipment of those days war rudimentary and power-stifling. Ah, the good old days!

8/27/0410:16 AM

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