Coolant/antifreeze question - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 53 (permalink) Old 01-22-2015, 05:14 AM Thread Starter
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Coolant/antifreeze question

Was about to change the coolant and according to the 'how to' on the other site, it says to use antifreeze that is phosphate and silicate free. I have the regular blue ethelene glycol antifreeze at work here. I contacted the manufacturer and they confirmed that it was free of those chemicals but when I told them that it was for my FJR, they said that that bike uses HOAT antifreeze (Note: Not OAT, but HOAT), which they cannot supply. I googled for HOAT antifreeze and came up with a link that says it is not availible in the UK, only the US so WTF am I supposed to use?

I was thinking Ethelene glycol with demineralised water should be good enough shouldn't it? I'll be changing it every year anyway.

HOAT antifrezze imported from the USA plus distilled water at about a tenner a gallon seems a bit over the top. Also, if HOAT is not availible in the UK, what are the dealers using? Not magic Yamawhatever, surely?

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Honda SH300i also in black.
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Last edited by Steve D UK; 01-22-2015 at 05:27 AM.
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post #2 of 53 (permalink) Old 01-22-2015, 06:48 AM
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I just check the containers in store that state "recommended for alloy engines".

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post #3 of 53 (permalink) Old 01-22-2015, 07:33 AM
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Was about to change the coolant and according to the 'how to' on the other site, it says to use antifreeze that is phosphate and silicate free. I have the regular blue ethelene glycol antifreeze at work here. I contacted the manufacturer and they confirmed that it was free of those chemicals but when I told them that it was for my FJR, they said that that bike uses HOAT antifreeze (Note: Not OAT, but HOAT), which they cannot supply. I googled for HOAT antifreeze and came up with a link that says it is not availible in the UK, only the US so WTF am I supposed to use?

I was thinking Ethelene glycol with demineralised water should be good enough shouldn't it? I'll be changing it every year anyway.

HOAT antifrezze imported from the USA plus distilled water at about a tenner a gallon seems a bit over the top. Also, if HOAT is not availible in the UK, what are the dealers using? Not magic Yamawhatever, surely?
in ' Normal ' use
antifreeze used in most vehicles will last several years w/o
degradation........ few recommending change as often as you mention

there is a broad spectrum of automotive vehicles manufactured in the UK
they may ALL use the same type a result of legislation / environment

i would certainly ask your yamaha dealer
& several other marques

Zerex is a readily recognizable brand & they make both types

I prefer Shell
they have an enviable track record with many marques internationally
odd they might Not be available in the UK
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post #4 of 53 (permalink) Old 01-22-2015, 08:03 AM Thread Starter
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As I understand it HOAT, is just OAT with silicates added. Anyone see any problems with using this:

http://www.granvilleoil.co.uk/pdfTec....php?ptdID=139

Obviously I'll flush every last drop of the old stuff out and flush with demineralised water although that one is supposed to be okay even with 'hard' water. If okay, what concentration? 50/50?


Edit: Just found my Haynes FJR workshop manual and all it states under coolant type is: 50% Distilled water, 50% silicate free corrosion inhibited ethelyne glycol anti-freeze.

So, answered my own question!

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FJR in black.
Honda SH300i also in black.
Range Rover Evoque Dynamic Lux. Black.
I see a pattern here!

Last edited by Steve D UK; 01-22-2015 at 08:18 AM. Reason: Just answered my own question!
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post #5 of 53 (permalink) Old 01-22-2015, 09:17 AM
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DO NOT use anything with silicates. They can create problems with your cooling pump and other bits.

Silicate free. Distilled water (it's $1 a gallon at the store here).

Honda pre-mix is good too and already has the distilled water in it.

Keep the minerals and silicates out to avoid the abrasiveness.

Changing it every other year should be fine. When you to your clutch and brake fluid, use it as a reminder to also do the coolant.
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post #6 of 53 (permalink) Old 01-22-2015, 09:37 AM Thread Starter
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FJR in black.
Honda SH300i also in black.
Range Rover Evoque Dynamic Lux. Black.
I see a pattern here!
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post #7 of 53 (permalink) Old 01-22-2015, 10:09 AM Thread Starter
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Grrrr. Had it parked outside work today, just gone to go home and I've turned the key too far off and my park lights have been on all day. Battery flat now.

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Range Rover Evoque Dynamic Lux. Black.
I see a pattern here!
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post #8 of 53 (permalink) Old 01-22-2015, 10:57 AM
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Grrrr. Had it parked outside work today, just gone to go home and I've turned the key too far off and my park lights have been on all day. Battery flat now.
DuhHuh. Good job noob .

Lots of folks recommend the 50/50 mix of whatever coolant. I prefer the concentrate and mixing it myself as one gallon of concentrate + 1 gallon of distilled water = 2 complete coolant changes. Why? B/C you will never ever "flush every last drop of the old stuff out" so I do a change, put a thousand mileson it and change again. makes for a good 20 minute kill on a rainy day. DO NOT use "demineralised water [or] 'hard' water". You don't want any of that stuff in your engine, ever! DISTILLED water only! Really, why would you want to voluntarily, even willingly introduce the nasties into your engine?
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post #9 of 53 (permalink) Old 01-22-2015, 01:54 PM Thread Starter
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Sorry to disappoint but I'm going with demineralised. This one from one of our major car parts suppliers: http://www.halfords.com/motoring/bul...op-up-water-5l. It says its suitable for engines. The smallest quantity of Distilled water I can buy in the UK is 10 litres and that's going to cost me $36.53 and I'm not prepared to pay that. I can get the antifreeze for nothing and the water for practically nothing. I can't see what harm it can do. After all, how many in here shy away from using Yamalube in their engines and are using all sorts - dino, semi and fully synthetic, Rotella........ Anyone's engine blown up yet? I bet plenty on here use plain water in their bike and car engines. Anyone reported problems because I cannot recall reading of any. I phoned up the Yamaha dealer that I bought the bike from and they said they DO NOT use Yamaha coolant - they happened to use Motul. If MamaYama had her way, she'd have you filling up with nothing other than officially branded and overpriced products - including Yamafuel no doubt! I'll honestly report back if I encounter any problems.

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FJR in black.
Honda SH300i also in black.
Range Rover Evoque Dynamic Lux. Black.
I see a pattern here!
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post #10 of 53 (permalink) Old 01-22-2015, 02:35 PM
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distilled water and whatever antifreeze you have

you wont have any problems just ensure you flush everything first a few times to get all the old stuff out

I don't know of any antifreeze in the uk that's not suitable to be honest
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