Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: craigderby on January 30, 2013, 12:10:40 PM

Title: HOAT Antifreeze
Post by: craigderby on January 30, 2013, 12:10:40 PM: I need to change the thermostat on the KJ, but I'm struggling to find the correct antifreeze anywhere.
Does anyone know a supplier for the HOAT type, or do people just use the OAT one instead?
Title: Re: HOAT Antifreeze
Post by: Tank on January 30, 2013, 04:55:29 PM: http://www.ebay.co.uk/itm/VAUXHALL-APPROVED-ANTIFREEZE-1L-LONG-LIFE-ENGINE-COOLANT-PROTECTION-/260900109305?pt=UK_Vehicle_Oils_Lubricants_Fluids&hash=item3cbedbbbf9 (http://www.ebay.co.uk/itm/VAUXHALL-APPROVED-ANTIFREEZE-1L-LONG-LIFE-ENGINE-COOLANT-PROTECTION-/260900109305?pt=UK_Vehicle_Oils_Lubricants_Fluids&hash=item3cbedbbbf9)

http://www.ebay.co.uk/itm/Mobil-1-Antifreeze-EXTRA-Anti-Freeze-Coolant-Car-Blue-Green-1L-HOAT-G11-Audi-VW-/130839314389?pt=UK_Vehicle_Oils_Lubricants_Fluids&hash=item1e76a17fd5 (http://www.ebay.co.uk/itm/Mobil-1-Antifreeze-EXTRA-Anti-Freeze-Coolant-Car-Blue-Green-1L-HOAT-G11-Audi-VW-/130839314389?pt=UK_Vehicle_Oils_Lubricants_Fluids&hash=item1e76a17fd5)
Title: Re: HOAT Antifreeze
Post by: craigderby on January 30, 2013, 05:27:45 PM: Cheers :icon_biggrin:

Blimey it's not cheap is it. I was going to give it a flush and replace it all. I might drop one of the sellers a line and see if they do a bigger bottle
Title: Re: HOAT Antifreeze
Post by: Shaggy on January 30, 2013, 05:53:40 PM: The simple answer is HOAT is backwards compatible with old ethylene glycol where OAT isn't! It's all to do with the silicate mixing capabilities! I went on a very very boring course regarding coolants! if you put OAT in an old cast engine designed with ethylene glycol in mind it does rot rubber seals & joints (I do have personal experience of this) & if you put old type coolants in an all alloy engine even with distilled water they do fur up & don't stop alloy corrosion!
Hope this helps!
Title: Re: HOAT Antifreeze
Post by: bgbazz on January 30, 2013, 07:00:59 PM: I use the Mobil HOAT version in my KJ 2.5 CRD with no problems..down to minus 25. But it's a shit load cheaper than you poor buggers are being slugged. A 5L bottle for me cost about 4 quid.
Title: Re: HOAT Antifreeze
Post by: dtooth on January 30, 2013, 07:24:01 PM: this any good http://www.smithandallan.com/search.aspx?q=antifreeze (http://www.smithandallan.com/search.aspx?q=antifreeze)
Title: Re: HOAT Antifreeze
Post by: Jonny Jeep on January 30, 2013, 09:11:40 PM: Comma G-05 is HOAT. Available in loads of places nowadays. I switched to it at my last flush/change when I did my water pump. It's the same price as the other Comma antifreeze types at my local car shop.

They have a stockist finder on their website. Look near the bottom for the postcode box...
http://www.commaoil.com/productsguide/view/6/354 (http://www.commaoil.com/productsguide/view/6/354)
Title: Re: HOAT Antifreeze
Post by: Bulldog67 on January 30, 2013, 10:34:11 PM: Quote from: Shaggy on January 30, 2013, 05:53:40 PM
The simple answer is HOAT is backwards compatible with old ethylene glycol where OAT isn't! It's all to do with the silicate mixing capabilities! I went on a very very boring course regarding coolants! if you put OAT in an old cast engine designed with ethylene glycol in mind it does rot rubber seals & joints (I do have personal experience of this) & if you put old type coolants in an all alloy engine even with distilled water they do fur up & don't stop alloy corrosion!
Hope this helps!

so what goes in a 360 then? FFS I had no idea ya coudnt just shove any antifreeze in there
Title: Re: HOAT Antifreeze
Post by: Lukemagnum on January 31, 2013, 11:23:00 AM: I've used Comma products for years and never had a problem.

If you put your reg number in on their website it tells you what fluids to put in your motor - oils and antifreeze and your nearest stockist.

They also have a guarantee where they will come round to you and take a sample if you think their products have caused damage, I know that they probably have dozens of get out clauses in it, but I'd have thought they'd have been caught out long ago if they were producing crap.
Title: Re: HOAT Antifreeze
Post by: craigderby on January 31, 2013, 04:42:15 PM: Thanks for the info guys. The Comma site has come up with a supplier that's only 2 miles away :icon_super:
Title: Re: HOAT Antifreeze
Post by: The Smiths on January 31, 2013, 07:03:14 PM: and more to the point - does the price seem a lot bit for you :lol_hitting:
Title: Re: HOAT Antifreeze
Post by: craigderby on February 01, 2013, 04:25:29 PM: I got a couple of bottles today. With the distilled water I ended up spending over £40 on it :010:
Title: Re: HOAT Antifreeze
Post by: The Smiths on February 01, 2013, 05:30:36 PM: ouch :die:
Title: Re: HOAT Antifreeze
Post by: UKJeeper on February 01, 2013, 05:50:56 PM: I use rain barrel water (i filter it). No scale or chemical sh*t in it.
Title: Re: HOAT Antifreeze
Post by: Bulldog67 on February 01, 2013, 05:55:59 PM: have you not heard of the the very real and serious threat of acid rain :icon_eek:
Title: Re: HOAT Antifreeze
Post by: MOCAJ on February 01, 2013, 05:56:54 PM: Quote from: UKJeeper on February 01, 2013, 05:50:56 PM
No chemical sh*t in it.

apart from the stuff in chemtrails, google it :icon_winkle:
Title: Re: HOAT Antifreeze
Post by: Dutch on February 01, 2013, 07:42:19 PM: Quote from: my other cars a jeep on February 01, 2013, 05:56:54 PM
Quote from: UKJeeper on February 01, 2013, 05:50:56 PM
No chemical sh*t in it.

apart from the stuff in chemtrails, google it :icon_winkle:

Bullshit !! :icon_winkle:
Title: Re: HOAT Antifreeze
Post by: MOCAJ on February 01, 2013, 07:49:47 PM: evidence please :icon_winkle: