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All the seven 940s in the family (4 people) use Mobil 1 and I change the oil every 10K miles and the Mann filters every 5K miles. I have been doing this for years with good results.
I have a 94' 940 with 88,100 miles that we only drive in the Summer to keep the salt off here in MN. We are retired and don't drive much and we have another beater 940 we also drive in the Summer. The last time I changed oil in this car (the one with 88,100 miles) was 2012 and it has 7K miles on the oil. Should the oil be changed because it has been 3 years since the last oil change or is it okay to wait until the Mobil 1 has 10K miles on it?
Thanks
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Mine: 3-940s running, 2-740 and 1-940 parts cars, and 3 1959 John Deere 630s (1 parts), dtr1:3-940s, dtr2:1-740, 1=940
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