2004 Mustang GT 146k miles
6,231 miles, 14 months
Out: 0W20 Pennzoil Platinum, Motorcraft FL820S
In: 6 qts 5W20 SuperTech HM Full Synthetic, Motorcraft FL820S, new drain plug o-ring.
Last time I was swayed to try 0W20 since the bottle sticker said same protection as 5W20, the engine ran and sounded no different. I felt better sticking with spec 5W20 this time.
Washed the Airaid non-oiled air filter, slipped the pre-filter back over it this time, since the filter gets much dirtier without it. Figure less dirt will make it into the engine and oil as well.
6,231 miles, 14 months
Out: 0W20 Pennzoil Platinum, Motorcraft FL820S
In: 6 qts 5W20 SuperTech HM Full Synthetic, Motorcraft FL820S, new drain plug o-ring.
Last time I was swayed to try 0W20 since the bottle sticker said same protection as 5W20, the engine ran and sounded no different. I felt better sticking with spec 5W20 this time.
Washed the Airaid non-oiled air filter, slipped the pre-filter back over it this time, since the filter gets much dirtier without it. Figure less dirt will make it into the engine and oil as well.
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