The 75 and ZT Owners Club Forums - View Single Post - Question about Chain Drives on the Diesel

alanaslan · 18th January 2020, 23:21

I have pushed a couple of 75 diesels up into the high mileage range one I changed the chain at 400,000 miles the other I did not bother, I believe in regular oil and filter changes. Good oils today are good for 15 to 20k but filter technology is still the same as it was fifty years ago, and if you use an additive the increased flocculation of the oil will make it need to be changed every 5 to 10k as once the filter is full of trapped waste the waste then sits in the oil, until it is changed.
If you really want to be on the safe side a good local lab should be able to perform a test on a 30ml sample of oil for about £20. The result will tell you how contaminated and with what the oil is. Which will tell you when you need to change it.
Then again seven litres of oil and a filter every 10k is able to be done from £25 upwards depending on the oil you use.
Alan

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18th January 2020, 23:21	#6
alanaslan Gets stuck in 75 Tourer Automatic conn, 75 Saloon Automatic Conn, The Monograme Spice Tourer Join Date: Jun 2014 Location: Johnstone Posts: 670 Thanks: 57 Thanked 231 Times in 151 Posts	I have pushed a couple of 75 diesels up into the high mileage range one I changed the chain at 400,000 miles the other I did not bother, I believe in regular oil and filter changes. Good oils today are good for 15 to 20k but filter technology is still the same as it was fifty years ago, and if you use an additive the increased flocculation of the oil will make it need to be changed every 5 to 10k as once the filter is full of trapped waste the waste then sits in the oil, until it is changed. If you really want to be on the safe side a good local lab should be able to perform a test on a 30ml sample of oil for about £20. The result will tell you how contaminated and with what the oil is. Which will tell you when you need to change it. Then again seven litres of oil and a filter every 10k is able to be done from £25 upwards depending on the oil you use. Alan Sent from my iPad using Tapatalk