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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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Coolant flushViews : 4478 Replies : 39Users Viewing This Thread : |
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Dec 8th, 2018, 23:13 | #21 | |
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If it is the OAT stuff, even if you've thoroughly drained and flushed all the ethylene glycol out, it's still not suitable for redblock engines. It was developed by the Japanese at the end of the last century for use in all-aluminium engines, because EG antifreeze can attack the aluminium. However, the OAT stuff attacks cast iron a lot more than EG ever attacked aluminium as well as attacking the gaskets and seals, as Bob rightly pointed out. If your pink stuff is OAT based, even if it says "Universal" antifreeze on it, the best advice i can give if you have a redblock, or any other engine older than about 2000 (gaskets in those engines are susceptible to decomposition from OAT) is run it over winter as it is and hope, come springtime, drain and flush the system, refilling with water, A couple of weeks to a month later, add some flushing agent and do another drain and flush, refill again with water. Repeat again a couple of weeks to a month later and then same again. By this time, you should have removed all the pink stuff and be able to refill with Ethylene Glycol, sometimes referred to as "Silicate" antifreeze as it contains certain silicates and water. Then, assuming you have a red block, don't ever go down the OAT route again. The reason for such a thorough flushing routine is that as Bob mentioned earlier, mixing EG with OAT causes the coolant to form a gel which is impossible to shift. This gel is formed because the acid in the OAT (Organic Acid Technology) causes the silicone to precipitate out of the Etheylene Glycol and form a gel. Finally, a word to the wise - don't go purely on what is recommended by a particular supplier or manufacturer. I've come across many that have recommended one product and found it would have done untold damage to my car. Do your own research, make sure that the product you have in mind fits ALL the criteria you need it to fulfill and doesn't contain any additives that will damage your car.
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Dec 9th, 2018, 11:13 | #22 |
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... and that's why for the reasons wot 'e says more eloquently ^^^^ than me, I shall continue using Comma XStream G48 in my engine, but I will let you know what Comma say .... should they reply to me Bob.
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Dec 9th, 2018, 12:15 | #23 |
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Coolant
Thanks for the input, I must have used all the coolant and thrown the container away, I don't remember it saying anything about being OAT, but probably as I cant be sure, I will change it to Bluecol.
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Dec 10th, 2018, 07:25 | #24 |
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Dec 10th, 2018, 07:29 | #25 |
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That is one clean expansion tank !!
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Dec 10th, 2018, 12:56 | #26 |
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Dec 10th, 2018, 14:53 | #27 | |
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Well. Meldrew speaking. That's not much more thn sales hype. And the Volvo approval is no more thn a commercial linkage. People will buy non Volvo products so they are very likely taking a fee to recommend one brand. That commercial procedure is older than the hills. In short. Why buy the Comma product, or Bluecol, or any other product, instead of buyng what Volvo themselves sell? If there is a price saving, how much is that to be botheed taking time and effort for and does the non-Volvo product sometimes cost more? Don't forget a recently reported experience with a non-Bosch temperature sender.... Hmmmm ??? . |
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Dec 10th, 2018, 15:16 | #28 | |
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Also I'm pretty sure that like most other things Volvo don't produce their own coolant. Don't get me wrong though as I do like to try and buy genuine parts but things like coolant and oil a good brand and same spec is usually fine
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Dec 10th, 2018, 15:30 | #29 | |
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Well. I don't see who produces the Volvo product as an issue. I do see a benefit in supporting Volvo dealer parts departments. Even in this anti-Volvo-parts Doubting Thomas forum it is known that sometimes Volvo dealers are the, perhaps the only, source of some parts. Use them, or lose them. 50 yards is an incentive. Are you paying more than if you bought Volvo antifreeze delivered with a forum discount from say FRF Volvo dealers in Swansea? Yes. Third party fluids are usually totally OK indeed. I have not in the past even thought of buying antifreeze from a car dealership. Nowadays I am conscious that we need to use the parts dealerships. And I receive excellent dealership parts service. |
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Dec 10th, 2018, 16:26 | #30 | |
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https://www.ebay.co.uk/itm/Genuine-V...-/202456103425 So, not a lot in it really
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