Thread: FSS Questions
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Old 05-20-2003, 11:06 PM
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Southern Southern is offline
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Join Date: Jan 2000
Location: Carol Stream, Il, USA
Posts: 605
I believe 0 W 40 may have served as a " break-in " oil at one time, for some OEM's.
I switched to Mobil 1 0W-40 two years ago, mainly due to the cold Chicago winters. Since I switched to 0W-40 I havn't had the "white sludge" build-up under the oil fill cap which occured in freezing weather on short trips which didn't bring the engine up to temperature.

I use to switch to Mobil 1 15W-50 during the summer months but this year I decided to stick with 0W-40. 0W-40 is rated for year round use with the "newer" (112) Mercedes engines because of the tight tollerences.
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles
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