viscocities

  1. just mixed oil viscocities - help!!!!!!

    My 1.4 8V Ibiza ran on 10W-30 Castrol Magnatec for the last 2 years. I just changed the oil yesterday afternoon and had about half a bottle of 5W-30 Castrol Magnatec and half a bottle of 15W-40 Castrol Magnatec so I mixed them. I came to start it this (cold) morning and it struggled a...
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