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hey i just wrote to valvoline about this and asked them about the little smoke i have coming out of my engine and this is what they sent
You should stay with the VR1 racing oil because it has 1300 ppm Zinc, where as the SynPower only has 850ppm, the smoke is probably due to the full synthetics detergents cleaning the engine, if the engine isn't use to full synth. the smoke could be from all the sludge buildup being burnt out of the engine...but if your looking for high zinc...stay with VR1 racing oil
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