From personal expertise if you have a 5w-30 car consuming oil don't swap to 0w-20. Quite a butt thinner and uses that 1-2% savings you would normally see. Just my two cents. From looking though it's cst @ 100c is a 7.8 vs pennzoil ultra syn 0w20 at 8.3. What's the price difference? I know the pennzoil is sold at Wal-Mart for cheap.
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"I feel like the bad decisions come into play when you trade too much of your time for money paying for things you can't really afford."
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