Today, 09:48 AM | #1 |
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5W30 or 40 for 105F/32C heat?
Featured on BIMMERPOST.com 60k mi, so not super high mileage engine- but 90% in-city stop and go situation. |
Today, 10:46 AM | #2 |
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Drives: 2018 M2 AW DCT
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Location: Seattle, WA
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5W30 motor oil is suitable for temperature range of -25C TO +25C
5W40 motor oil is suitable for temperature Range of -25C to +35C. https://www.oil-store.co.uk/blog/wha...0is%20superior.
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Today, 04:25 PM | #4 | |
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Quote:
If you're not racing the car, temperature should stay relatively consistent from like 60-100F. If the car runs significantly hotter in summer, your cooling system needs checked. Your radiator and fans should be able to keep you at a relatively consistent temperature. |
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