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Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) Everything related to the mechanical maintenance of the FR-S and BRZ |
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10-01-2016, 08:09 PM | #29 | |
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The Following User Says Thank You to Tcoat For This Useful Post: | humfrz (10-02-2016) |
11-08-2016, 07:59 PM | #30 |
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I would stick with the oem coolant itself. Water doesn't have the same rated life as a higher content chemical coolant. Guys who pour straight distilled water have better cooling than antifreeze, but you need to change it out every year or two to prevent corrosion. Mind you this only applies if you in an area that doesn't freeze. A little might be okay, but I eventually you have to make sure the ratios stay correct.
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11-08-2016, 11:20 PM | #31 | |
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* the concentrated Subaru super blue stuff is 5% water to start with. * most of the loss of coolant is due to evaporation and the water is the first to go. So, there ....... humfrz - @Tcoat has learnt me well ..... |
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The Following User Says Thank You to humfrz For This Useful Post: | Ultramaroon (11-08-2016) |
11-03-2018, 09:18 PM | #32 | |
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Factors I can think of varying the relative humidity at the breather hole are ambient temperature, engine compartment temperature, ambient humidity, air flow past the hole, how long the hot and cold periods experienced by the bottle are and there may be other factors. I know many people have never had to top up for 5 years whereas I need to every few months and put it down mainly to our average humidity is much lower than the world average. I am confident I have zero leaks (other than at that breather hole). To minimise losses I have heat-shielded the bottle with Al foil and put some foam over the hole to soften air flow past the hole, and reduced the hole size itself. My dad's old Mazda had only a pinhole. The overflow bottle idea is a good one but a sealed variable volume would be ideal, e.g. a bladder or piston but with a sealable opening for additions in cases of leaks. There would be zero corrosive oxygen from the air getting in and consuming certain coolant components. I agree that for the most part top-ups with PURE water is fine but the makers play safe by stating fresh coolant in case there is a true leak and it also means fresh additives are introduced.
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The Following User Says Thank You to notout86 For This Useful Post: | humfrz (11-04-2018) |
11-03-2018, 10:12 PM | #33 |
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distilled or DI water is fine.
Unless there's some more volatile component mixed in there, I'm pretty sure you're just gradually increasing the concentration of the coolant if you top off with the solution. Meh.
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The Following User Says Thank You to Ultramaroon For This Useful Post: | notout86 (11-04-2018) |
11-04-2018, 01:12 AM | #34 | |
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I see you have put some thought into that situation - You must be a young fellow - humfrz |
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The Following User Says Thank You to humfrz For This Useful Post: | notout86 (11-04-2018) |
11-04-2018, 01:48 AM | #35 |
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Still an old fart at 76 (similar to you I believe).
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11-04-2018, 01:59 AM | #36 |
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OK, OK, I got the picture -
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The Following User Says Thank You to humfrz For This Useful Post: | notout86 (11-05-2018) |
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