This spring, check the flexible parts of the inter cooler hoses and clamps. They get soft with oil and age. And find/replace the vacuum lines anyway, they are old. If you think the front O2 sensor has more than 100K miles on it, replace it with new.
One of the Brickers had an 850 and complained about poor city mpg. 16-19 mpg around town (Boston). He decided to replace his Chinese branded front wheel bearings with German wheel bearings. His mileage around town went to 24mpg!
Just saying. Parts get old and wear. Check your tire pressure regularly in the winter, I always add 2-4 psi extra when the temps are fluctuating.
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Keeping it running is better than buying new
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