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01-30-2016, 11:38 PM | #2 |
Major General
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What's the service intervals like on your car? I flushed mine when I first got it as it was serviced every 15k kays or so...
Since then I've done annual oil changes (less than 5k kays for me) and the detergents in the oil keeps the engine clean. Liqui moly engine flush is currently on sale at repco for around $10 (30% off) just use some of that |
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01-31-2016, 03:00 AM | #4 |
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With todays synthetic oils you don't need to do engine flushes as most of them have high detergent content anyway, just change them more often like 5k.
In the old days with mineral oils you had to do flushes to break up engine sludge build up in the head/s, but today its not really necessary and highly not recommended on old or high km engines as I seen them spin bearings. The old preferred way to do an engine flush is to warm the engine up and pour 1 litre of kerosene into the motor and run for 20 sec, drop oil and refill with crappy cheap oil, run for about 2 min, drop oil and filter and refill with the good stuff and a fresh new filter. But that's for extreme sludge build up, sometimes even that wasn't enough so we had to pull rocker cover/s off and clean manually with kerosene and brush. Todays modern engine oils are pretty good and they come a long way. |
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01-31-2016, 07:05 AM | #5 |
Major General
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I bought a used E90, and assumed the previous owner only did the bare minimum, (30,000 km intervals) which is not nearly enough IMHO.
For the first 5000 km, I did an oil change every 1000 km, and 100-200 km before changing the oil I added Seafoam to the oil, and just drove normally, no hard driving. I just used the cheapest synthetic I could find for this. Oil is MUCH cleaner now. |
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