First true synthetic available to the public and constantly improved since then... maybe not the 'best' but very reliable and does the job. I buy the big jugs anytime I see them on sale no matter what viscosity cause I have kids/friends who rely on me as their first-aid mechanic. All of them comment on the 'expensive oil' I let them have and they've all told me their vehicles seemed happier ever since. Not scientific I know but the stuff just plain works.
No, I don't work for Mobil - hee hee
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