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General Bobcat Skidsteer Forum
Let's revisit the oil vs. hydraulic question???
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<blockquote data-quote="OldMachinist" data-source="post: 12708" data-attributes="member: 437"><p>I think that Tazza is right that we'll probably never end this controversy on engine oil versus hydraulic oil and the following comments are my thoughts and experiences from being involved the design process that big businesses go thru for their products.</p><p> </p><p>I sat on design review committees as a Certified Manufacturing Engineer (CME) for a large manufacturing company that I worked for and some of the things that went into the process were selling points, length of warranty and replacement parts. There were many other things to consider but these are the ones that I think deal with this issue.</p><p> </p><p>First let explain what a CME is. It means that I took a course and passed a test to receive a certificate from the Society of Manufacturing Engineers (SME). So no I didn't get a college degree in engineering.</p><p> </p><p>Now I don't know what went on when Bobcat designed their machines but I think that most large corporations follows some kind of similar review process. Bobcat used the one oil for all as a selling point for years on their machines. It goes like this the salesman tells the buyer you only have to have one kind of oil for this machine so your dumb employees can't screw up and put the wrong oil in. But what you have to remember that they probably tested it and found that engine oil worked long enough to get the machine out of warranty. That's where the replacement parts come in to play. Because big business loves to sell replacement parts and new equipment. They price replacement parts high to force the buyers to consider buying new equipment. We would take an off the shelf part that you could be bought anywhere and have the supplier make small changes so that you had to come back to us for it. It would be simple things like change the thread sizes or bolt pattern. Small changes like this didn't really affect the price we paid very much but we could charge what ever we wanted for repair parts because the suppliers could only sell them to us. And when the demand for the part dwindled the price would only go higher because even though we had to supply it for 7 years nothing said we had to stock it or how long we could make you wait for it. So we would go back to the supplier and have them quote making one or a small batch and pass along the cost plus the normal markup. Sometimes the lead-time would be several months to get repair parts. I'm not saying I agreed with this but it's just the way businesses look at things.</p><p> </p><p>I know that I've gotten off on a tangent here but I'm just trying to show that just because they said engine oil would work in the hydraulic system doesn't mean that it's good for it. Like I said at the beginning these are just my thoughts and experiences and you can put whatever oil you want to in your machine but I will continue to use hydraulic oil in my hydraulics and engine oil in my engine.</p><p> </p><p><span style="font-family: 'Times New Roman'">I'm sure that all of you that have diesel engines use oil that is designed for diesels in it. So you must believe there's something different between what oils are designed for. You wouldn't think of putting hydraulic oil in your engine so why put engine oil in your hydraulics. </span></p></blockquote><p></p>
[QUOTE="OldMachinist, post: 12708, member: 437"] I think that Tazza is right that we’ll probably never end this controversy on engine oil versus hydraulic oil and the following comments are my thoughts and experiences from being involved the design process that big businesses go thru for their products. I sat on design review committees as a Certified Manufacturing Engineer (CME) for a large manufacturing company that I worked for and some of the things that went into the process were selling points, length of warranty and replacement parts. There were many other things to consider but these are the ones that I think deal with this issue. First let explain what a CME is. It means that I took a course and passed a test to receive a certificate from the Society of Manufacturing Engineers (SME). So no I didn’t get a college degree in engineering. Now I don’t know what went on when Bobcat designed their machines but I think that most large corporations follows some kind of similar review process. Bobcat used the one oil for all as a selling point for years on their machines. It goes like this the salesman tells the buyer you only have to have one kind of oil for this machine so your dumb employees can’t screw up and put the wrong oil in. But what you have to remember that they probably tested it and found that engine oil worked long enough to get the machine out of warranty. That’s where the replacement parts come in to play. Because big business loves to sell replacement parts and new equipment. They price replacement parts high to force the buyers to consider buying new equipment. We would take an off the shelf part that you could be bought anywhere and have the supplier make small changes so that you had to come back to us for it. It would be simple things like change the thread sizes or bolt pattern. Small changes like this didn’t really affect the price we paid very much but we could charge what ever we wanted for repair parts because the suppliers could only sell them to us. And when the demand for the part dwindled the price would only go higher because even though we had to supply it for 7 years nothing said we had to stock it or how long we could make you wait for it. So we would go back to the supplier and have them quote making one or a small batch and pass along the cost plus the normal markup. Sometimes the lead-time would be several months to get repair parts. I'm not saying I agreed with this but it's just the way businesses look at things. I know that I’ve gotten off on a tangent here but I’m just trying to show that just because they said engine oil would work in the hydraulic system doesn’t mean that it’s good for it. Like I said at the beginning these are just my thoughts and experiences and you can put whatever oil you want to in your machine but I will continue to use hydraulic oil in my hydraulics and engine oil in my engine. [FONT=Times New Roman]I’m sure that all of you that have diesel engines use oil that is designed for diesels in it. So you must believe there’s something different between what oils are designed for. You wouldn’t think of putting hydraulic oil in your engine so why put engine oil in your hydraulics. [/FONT] [/QUOTE]
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Let's revisit the oil vs. hydraulic question???
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