oilman Posted March 14, 2008 Share Posted March 14, 2008 To kick off our new 12 part series of interesting oil facts we thought that we would address the statement 'My oil has turned to water!'Let's be objective and look at the actual figures involved here, emotional expressions such as 'turned to water' just will not do. Engineering is supposed to be a science afterall!So! Almost all modern jet engines run on 5cst at 100degC synthetic ester oil. Needless to say, some bearings will actually be running at a temperature of perhaps 200degC; so the true oil viscosity in these situations is in fact 1.5cst. This is really thin, much thinner than any car or bike engine oil even in a race engine.But is it as thin as water? NO! At 20degC water has a viscosity of 1.0cst and at 50degC it drops to 0.55cst. Just for comparison, a 0w-20 oil will have an approximate viscosity of 107cst at 20degC, 32cst at 50degC, 8.9cst at 100degC and 2.3cst at 200degC.So there you go, it may look like water but it certainly isn�t!Cheers.GuyNote: Centistokes (cst) is the measure of a fluid's resistance to flow (viscosity). It is calculated in terms of the time required for a standard quantity of fluid at a certain temperature to flow through a standard orifice. The higher the value, the more viscous the fluid. Link to comment Share on other sites More sharing options...
thebrookster Posted March 14, 2008 Share Posted March 14, 2008 Ohh??!!!! I thought you were not coming back, and where having nought to do with this forum?? Link to comment Share on other sites More sharing options...
oilman Posted March 14, 2008 Author Share Posted March 14, 2008 That would not be fair on the users here who are Customers of ours.We will merely have to tolerate those that seem to have something against Opie OilsCheers Link to comment Share on other sites More sharing options...
GTsixCA Posted March 14, 2008 Share Posted March 14, 2008 Sounds like advertising to me...... Link to comment Share on other sites More sharing options...
oilman Posted March 14, 2008 Author Share Posted March 14, 2008 ah I knew there was a reason for being here ;)Cheers Link to comment Share on other sites More sharing options...
toomanyprojects Posted March 14, 2008 Share Posted March 14, 2008 oilman wrote:To kick off Opie Oils new 12 part series of interesting oil facts we thought that we would address the statement “My oil has turned to water!”Great, 'cos my oil really did turn to water, see!! Link to comment Share on other sites More sharing options...
G.in_Lux Posted March 14, 2008 Share Posted March 14, 2008 Milk? Link to comment Share on other sites More sharing options...
oilman Posted March 14, 2008 Author Share Posted March 14, 2008 Nice.........................what was it originally?Cheers Link to comment Share on other sites More sharing options...
toomanyprojects Posted March 14, 2008 Share Posted March 14, 2008 Probably Universal Tractor Oil 10W/40.But after it had been sitting outside for 10 years it was mostly water. All fixed now. Link to comment Share on other sites More sharing options...
Dizzy Posted March 14, 2008 Share Posted March 14, 2008 oilman wrote:That would not be fair on the users here who are Customers of ours.We will merely have to tolerate those that seem to have something against Opie OilsCheersI have nothing against Opie oils (never heard of them before despite being in the engine business for 40+ years) but if every company selling stuff for cars advertises here, there'll be no space left for really interesting facts! Link to comment Share on other sites More sharing options...
valencia1 Posted March 14, 2008 Share Posted March 14, 2008 oil! buy it, use it, change it, no big deal Link to comment Share on other sites More sharing options...
Ben Baxter Posted March 14, 2008 Share Posted March 14, 2008 Even better, Oil - buy it, give up trying to find out where it's leaking from, top up constantly and sod replacing it, a new gallon goes in once a month. Link to comment Share on other sites More sharing options...
GT6 John Posted March 14, 2008 Share Posted March 14, 2008 Oilman, despite 3 previous warnings about the forum rules you still persist in posting indirect marketing for your business.You try to play the members off against the club admins for your own gains which is disappointing.Anyway, after discussion with the other admins we have decided to allow your 'informative' posts. However the rules state no advertising. Your only posts on here to date have been to lead people to your business.You are welcome to offer free advice to our members, and we encourage that. Therefore, to this end I have removed all mentions of your business in both your post and your signature.Please continue to post your 12 part series as a helpful source of information to our members. That side is very welcome; the free marketing/advertising of your business is not. Link to comment Share on other sites More sharing options...
JohnD Posted March 14, 2008 Share Posted March 14, 2008 GT6John,Why not ask oilman to write his articles, to be published not as posts, but as "Advertising features" as often appear in magazines? They could appear as threads but closed from the outset. You could decide if a banner ad on the article to pay him for the article, or a fee to the board/club for the privilidge of being 'featured' is appropriate.John Link to comment Share on other sites More sharing options...
GT6 John Posted March 14, 2008 Share Posted March 14, 2008 That's a good idea, John. I would like his articles to feature in our club magazine, too, where all our members can get the benefit of them.We would be more than happy to accomodate Oilman and his useful articles, and will promote his company at the same time, (it's all about scratching backs) but would like some sign of support and correspondence (!) from him to begin with. Currently we haven't had this.I did contact him before, detailing the advertising options open to him, and asked him to consider them and come back with any other ideas that he had so we could perhaps work together.For example he offers a discount to club members (Bit of free advertising for him there!). We didn't know that until he mentioned it in passing the last time. We'd like to work with him to tell all our members this fact, for a start.Let's hope we can work together, to the mutual benefit of all parties. Link to comment Share on other sites More sharing options...
Nick B. Posted March 15, 2008 Share Posted March 15, 2008 Hi OilmanNow you are here, could you please help confirm/ kill some urban legend that that runs in the triumphworld.Word is that there is some aggressive ingeredient in GL5 oils that will "eat" the yellow materials in our differentials. Therefore we should only use GL4 oil. Is this some rubbish, or should I get rid of my GL5 oils?Kind regardsNick Link to comment Share on other sites More sharing options...
oilman Posted March 15, 2008 Author Share Posted March 15, 2008 Nick It was the case some years ago but things have not been like this for more than 10 years now. All GL5 oils are compatible with yellow metals. What is not is chlorinated paraffin which makes up a lot of these so called magic addatives.CheersSimon Link to comment Share on other sites More sharing options...
Nick B. Posted March 15, 2008 Share Posted March 15, 2008 Excellent. Thank you simon! (working on a saturday night - impressive)Thanks againCheersNick Link to comment Share on other sites More sharing options...
oilman Posted March 15, 2008 Author Share Posted March 15, 2008 John_Martin wrote:That's a good idea, John. I would like his articles to feature in our club magazine, too, where all our members can get the benefit of them.We would be more than happy to accomodate Oilman and his useful articles, and will promote his company at the same time, (it's all about scratching backs) but would like some sign of support and correspondence (!) from him to begin with. Currently we haven't had this.I did contact him before, detailing the advertising options open to him, and asked him to consider them and come back with any other ideas that he had so we could perhaps work together.For example he offers a discount to club members (Bit of free advertising for him there!). We didn't know that until he mentioned it in passing the last time. We'd like to work with him to tell all our members this fact, for a start.Let's hope we can work together, to the mutual benefit of all parties.I would be more than happy to help however I can and contribute either to this forum or to the Club Magazine or both. I'm sure that our expertise would be useful to some of your Members, the discounts may come in handy too.Just drop me a mail to sales@opieoils.co.uk and I would be happy to start a dialogue that hopefully will be mutually beneficial.Thanks for the constructive comments.CheersSimon Link to comment Share on other sites More sharing options...
heraldcoupe Posted March 15, 2008 Share Posted March 15, 2008 Well I'm not the oilman, but I am married to a development chemist who tells me not to use GL5 where yellow metals are present. GL4 was specified well into the 1990s for Volkswagen transmissions, GL5 is warned against in the factory literature.There are some GL5s which are claimed to be safe with yellow metal, but unless this is disclaimed by the particular brand you are buying, stick with GL4,Cheers,Bill. Link to comment Share on other sites More sharing options...
Nick B. Posted March 15, 2008 Share Posted March 15, 2008 Well, it does say - compatible with copper alloy components - , so that should put me on the safe side (cross fingers now)CheersNick Link to comment Share on other sites More sharing options...
lordleonusa Posted March 20, 2008 Share Posted March 20, 2008 You can buy modern synthetics which are GL-4 rated.I would not use GL-5 in my Triumphs.Oil companies can and do LIE about their products.Better safe than sorry.Leon Link to comment Share on other sites More sharing options...
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