Recent content by Koko & Bros

  1. Koko & Bros

    1992 Mazda Miata 12 Hour Endurance Race

    I was going to try rotella t5 10w30 for our next race. Does anyone predict better wear numbers from a synthetic hdeo or a synthetic sn/sp 40wt?
  2. Koko & Bros

    1992 Mazda Miata 12 Hour Endurance Race

    Real oil pressure gauge. I have no interest in gaining power from oil, only longevity. The engine already makes 125whp
  3. Koko & Bros

    1992 Mazda Miata 12 Hour Endurance Race

    What are the thoughts of going to a synthetic oil? The reasoning for the sae30 is shear stability which clearly worked seeing that viscosity is 9.5 with 1.5% fuel. If I want to a multigrade I feel a 40wt is in order. My other feeling for a synthetic oil is that we get this car warm and dog on it...
  4. Koko & Bros

    1992 Mazda Miata 12 Hour Endurance Race

    Unknown miles on the unit. Leakdown is a little high on cylinder 1 but strong on 2-3 & 4. Wear metals looked very good from oil analysis I have done on previous BMW M20 engines in the same racing environment.
  5. Koko & Bros

    1992 Mazda Miata 12 Hour Endurance Race

    Attached is an oil sample from our 1992 (1.6) Mazda Miata Racecar. This was from a 12 hour endurance race plus approximately 1 hour of practice prior to the race. Oil was SN rated Kendall SAE30. Curious to see where You think there is room for improvement? Oil pressure indicates 48-52psi while...
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