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Differences Between Generations of Mobil 1 15W-50
 
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Question:
Differences Between Generations of Mobil 1 15W-50
My question concerns Mobil 1 15W-50. For several years Mobil 1 15W-50 was made and sold with a red cap. I've used it for years in all my vehicles. That oil was discontinued and was replaced with Mobil 1 15W-50, now with a silver cap. How does the new 15W-50 differ from the old red cap 15W-50 oil? Is it the same formulation?
-- Michael Seitz, York, PA
Answer:
The color of the cap changed as part of a packaging refresh.
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