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GM spec's out the 195 in thier TPI+TBI vehicles.They designed the eng. to run in that temp. range.It's an ECM(computer) thing.
Heat does play a role but the major factor with how an oil flows is it's viscosity rateing.
Of course a warm oil flows better than a cold one but how thick it is (viscosity) plays a role too.
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71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension.
Petrolia,Ontario,Canada but working in Port Huron,MI.
See ALL my Blazer pic's HERE
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