11-13-2018, 06:40 AM | #1 |
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is it worthwhile to chang out coolant?
I have only 20K miles on my 9/2015 build date m235i. does coolant change prevent trouble later with electric coolant pump etc? If so do you change it out based on time or milage?
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11-13-2018, 03:59 PM | #2 |
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I plan on doing mine around the three year mark. I’ll be around 50k by then, but if you’re at three years, regardless of mileage, it would be wise to do it soon.
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11-13-2018, 04:35 PM | #3 |
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I’m coming up on to 4-1/2 years still under 35,000-miles. Will probably get a refractometer or hydrometer (I’ll research if they work on these long life coolants) and test my coolant before the temps drop into single.
I’ll also check my hoses and think about changing out any hoses that have easy access. |
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11-14-2018, 07:43 AM | #4 |
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I highly recommend that the cooling system be drained, flushed with distilled water and refilled with a 50/50 mix of BMW and distilled water every 3 years. These cars, especially those with a turbo, are hard on the coolant. Btw, I’ve owned and wrenched on bimmers since 1974.
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08-01-2019, 12:56 AM | #5 | |
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08-01-2019, 04:31 AM | #6 | |
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I actually believe water is a better heat exchanger then anti-freeze but in cold temps water will freeze and water doesn’t offer the anti-corrosion. And water converts to steam at too low a pressure so anti-freeze helps with system pressurization. Jay Leno talks about a radiator fill that has neither the need for water and is not glycol based - it’s main attribute is long life and no corrosion for cars that have a long life 100 years, it’s a classic car savior. |
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08-01-2019, 08:48 AM | #7 | |
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It is a very bad idea to fill with 100% coolant as the engine will likely overheat due to poor heat transfer in typical summer conditions and in very cold conditions the coolant will freeze sooner than a 50/50 mix with distilled water. |
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08-01-2019, 12:43 PM | #8 |
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Agreed - 100% coolant is never a good idea.
There are paper "dipsticks" & gauges that can test the acidity of your coolant to let you know if it should be flushed.
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08-11-2019, 03:26 PM | #9 | |
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How hard is the car to flush properly for a shadetree DIY person? |
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09-05-2019, 02:45 PM | #10 | |
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biz
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11-07-2019, 07:18 PM | #11 |
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BMW says 100K Coolant then change it at 50k.
BMW says 10K oil change then change at 5K BMW says 100K AT Fluid then change at 50K . . Simple and effective for Long Long Long Term ownership. If you plan on selling the car before 100K mile then just follow BMW Std change intervals. . . |
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