Fully Synthetic Oil

  • Posted by a hidden member.
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    Oct 10, 2012 3:51 AM GMT
    So, does anyone actually use fully synthetic oil in their vehicles unless the owners manual specifically calls for it?
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    Oct 10, 2012 4:10 AM GMT
    If your car doesn't require it, then don't use it. Otherwise, it's a waste of money. Same with premium gas.
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    Oct 10, 2012 5:09 AM GMT
    I don't fully agree. It is a much larger gap between oil changes. It's 7,500-8K between changes vs. 3-5K on conventional.
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    Oct 10, 2012 6:02 AM GMT
    Where did you get that info?
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    Oct 10, 2012 1:16 PM GMT
    It depends on several factors whether you will get your money back or not. I have had several VW diesels and have always run full synthetic in them. I also drive those to 200-300k+ miles. Synthetic stays consistent in its viscosity regardless of temperature so for example up here in Minnesota in the dead of winter I have no problems starting my vehicles where as I've got friends with regular gassers that can't even get them started (that’s not even factoring in the higher compression of a diesel engine.) This is also when the most damage can occur to your engine. Any time you start a vehicle it takes several revolutions of the engine before the oil gets where it needs to go and if you've got thick, cold oil it’s going to take even longer for the oil to get there.

    My truck though I run regular oil in because I've accepted it’s not going to last to 300k miles without larger issues and it’s a secondary vehicle (that sits from time to time) so changing the oil more frequently is more cost effective and should yield similar benefits. This is because dirty oil is also thicker and hence takes longer to get where it needs to go within the engine.

    If I was ever a sucker though and bought a vehicle NEW I would probably run full synthetic in it from day one as it IS a superior product. Some say that if you've got a lot of miles on your vehicle already its best to stick with what the vehicle is used to. The claim is that a change like this can lead to leaks and blown seals. I tend to agree with this mentality since i've had it more or less happen to me. I changed from regular oil to a high mileage oil in my old Explorer and before the next oil change my valve covers were leaking. Thankfully this was a simple fix and it could very well have been coincidence but I've decided not to risk it in the future.

    I'll quit blabbering now though as I beliebe I've more than answered your original question....
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    Oct 10, 2012 1:50 PM GMT
    I'm fully synthetic on my motorcycle.
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    Oct 10, 2012 1:54 PM GMT
    dbm811 saidSo, does anyone actually use fully synthetic oil in their vehicles unless the owners manual specifically calls for it?


    Yes....on my SUV, car, and motorcycle since day one
    I have the oil changed every 3000 miles too. Yes, even with the synthetic. icon_redface.gificon_rolleyes.gif
    It's the lifeblood of the engine.

    Tristan
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    Oct 10, 2012 2:09 PM GMT
    NewdDawg saidIt depends on several factors whether you will get your money back or not. I have had several VW diesels and have always run full synthetic in them. I also drive those to 200-300k+ miles. Synthetic stays consistent in its viscosity regardless of temperature so for example up here in Minnesota in the dead of winter I have no problems starting my vehicles where as I've got friends with regular gassers that can't even get them started (that’s not even factoring in the higher compression of a diesel engine.) This is also when the most damage can occur to your engine. Any time you start a vehicle it takes several revolutions of the engine before the oil gets where it needs to go and if you've got thick, cold oil it’s going to take even longer for the oil to get there.

    My truck though I run regular oil in because I've accepted it’s not going to last to 300k miles without larger issues and it’s a secondary vehicle (that sits from time to time) so changing the oil more frequently is more cost effective and should yield similar benefits. This is because dirty oil is also thicker and hence takes longer to get where it needs to go within the engine.

    If I was ever a sucker though and bought a vehicle NEW I would probably run full synthetic in it from day one as it IS a superior product. Some say that if you've got a lot of miles on your vehicle already its best to stick with what the vehicle is used to. The claim is that a change like this can lead to leaks and blown seals. I tend to agree with this mentality since i've had it more or less happen to me. I changed from regular oil to a high mileage oil in my old Explorer and before the next oil change my valve covers were leaking. Thankfully this was a simple fix and it could very well have been coincidence but I've decided not to risk it in the future.

    I'll quit blabbering now though as I beliebe I've more than answered your original question....


    +1
  • Montague

    Posts: 5205

    Oct 10, 2012 2:42 PM GMT
    Run fully synthetic and do your own oil/filter changes and break the difference in cost.
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    Oct 10, 2012 5:14 PM GMT
    I have been using Militec in my 1999 Diesel Toyota L.C in Queensland . I mainly use this truck for off-road , pulling a 2.5 tons caravan , and it does put some mechanical stress to the vehicule so that type of oil helps . I also use fully synthetic oil in the differentials ( front , rear and central ) and because Toyota's factory differentials are weak anyway , i replaced all of them with A.R.B's . I also use synthetic oil in the transmission and transfer case icon_smile.gif.
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    Oct 10, 2012 5:49 PM GMT
    dbm811 saidSo, does anyone actually use fully synthetic oil in their vehicles unless the owners manual specifically calls for it?


    Yes, I even use it on my collector cars. Not SN though as they are all flat tappet cams
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    Oct 10, 2012 5:50 PM GMT
    musclefetish1 said
    dbm811 saidSo, does anyone actually use fully synthetic oil in their vehicles unless the owners manual specifically calls for it?


    Yes....on my SUV, car, and motorcycle since day one
    I have the oil changed every 3000 miles too. Yes, even with the synthetic. icon_redface.gificon_rolleyes.gif
    It's the lifeblood of the engine.

    Tristan


    You want to break in with conventional though. .
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    Oct 10, 2012 5:50 PM GMT
    I use fully synthetic oil in a car which has 263,000 miles and I am very pleased.

    It is not my only car but one I decided to keep and it is actually 27 years old. It has been well maintained and always garaged. However, I realize it is only of value to me.
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    Oct 10, 2012 5:53 PM GMT
    freedomisntfree said
    musclefetish1 said
    dbm811 saidSo, does anyone actually use fully synthetic oil in their vehicles unless the owners manual specifically calls for it?


    Yes....on my SUV, car, and motorcycle since day one
    I have the oil changed every 3000 miles too. Yes, even with the synthetic. icon_redface.gificon_rolleyes.gif
    It's the lifeblood of the engine.

    Tristan


    You want to break in with conventional though. .


    Well too late now. So far they are running perfectly. I actually had the oil replaced with synthetic the day or two after each was bought. icon_confused.gif

    All 3 have high performance engines. What's the problem with using it on new?

    Thanks,
    Tristan
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    Oct 10, 2012 5:55 PM GMT
    NewdDawg saidIt depends on several factors whether you will get your money back or not. I have had several VW diesels and have always run full synthetic in them. I also drive those to 200-300k+ miles. Synthetic stays consistent in its viscosity regardless of temperature so for example up here in Minnesota in the dead of winter I have no problems starting my vehicles where as I've got friends with regular gassers that can't even get them started (that’s not even factoring in the higher compression of a diesel engine.) This is also when the most damage can occur to your engine. Any time you start a vehicle it takes several revolutions of the engine before the oil gets where it needs to go and if you've got thick, cold oil it’s going to take even longer for the oil to get there.

    My truck though I run regular oil in because I've accepted it’s not going to last to 300k miles without larger issues and it’s a secondary vehicle (that sits from time to time) so changing the oil more frequently is more cost effective and should yield similar benefits. This is because dirty oil is also thicker and hence takes longer to get where it needs to go within the engine.

    If I was ever a sucker though and bought a vehicle NEW I would probably run full synthetic in it from day one as it IS a superior product. Some say that if you've got a lot of miles on your vehicle already its best to stick with what the vehicle is used to. The claim is that a change like this can lead to leaks and blown seals. I tend to agree with this mentality since i've had it more or less happen to me. I changed from regular oil to a high mileage oil in my old Explorer and before the next oil change my valve covers were leaking. Thankfully this was a simple fix and it could very well have been coincidence but I've decided not to risk it in the future.

    I'll quit blabbering now though as I beliebe I've more than answered your original question....


    "The claim is that a change like this can lead to leaks and blown seals. "

    Has not happened to me even on 50 year old powertrains.

    Use conventional for break in to help rings seat properly.
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    Oct 10, 2012 5:57 PM GMT
    musclefetish1 said
    freedomisntfree said
    musclefetish1 said
    dbm811 saidSo, does anyone actually use fully synthetic oil in their vehicles unless the owners manual specifically calls for it?


    Yes....on my SUV, car, and motorcycle since day one
    I have the oil changed every 3000 miles too. Yes, even with the synthetic. icon_redface.gificon_rolleyes.gif
    It's the lifeblood of the engine.

    Tristan


    You want to break in with conventional though. .


    Well too late now. So far they are running perfectly. I actually had the oil replaced with synthetic the day or two after each was bought. icon_confused.gif

    All 3 have high performance engines. What's the problem with using it on new?

    Thanks,
    Tristan


    I'm primarily talking about rebuilds. If new car factory fill is full synthetic, then continue on.
  • Medjai

    Posts: 2671

    Oct 10, 2012 6:03 PM GMT
    I use full synthetic. It has much better wear protection and a longer usable life. Between less oil changes, which I do myself, and less costly collateral upkeep, it more than pays for itself.
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    Oct 10, 2012 6:07 PM GMT
    Medjai saidI use full synthetic. It has much better wear protection and a longer usable life. Between less oil changes, which I do myself, and less costly collateral upkeep, it more than pays for itself.


    I'm more concerned with one old collector car that I brought back to Ohio, regarding cold starts. I don't like them to sit too long without starting and warming to full operating temperature once in a while. Full synthetic gives me a bunch more protection in that critical first minute or so after a cold day start. .
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    Oct 10, 2012 6:21 PM GMT
    I have to wonder if theres anything to most of this or if its a great way for the oil companies to sell you something that does the same thing. the cost of synthetic is pretty high. The oil part of oil can be recycled indefinetly, the recycling process mostly removes dirt and contaminants, i tend to change my oil when it starts looking dirty, this way know its time, i dont really buy into the whole mileage thing, i dont wait until its black either tho, also the "3 months" part is due to the oil becoming acidic.
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    Oct 10, 2012 6:49 PM GMT
    Yeah, I just don't agree with the OP's claim that switching to synthetic means you can automatically start changing the oil at 8K intervals instead of 3 - 5K. That seems a little far fetched.
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    Oct 10, 2012 6:56 PM GMT
    I use Mobil 1 full synthetic in my truck. I'm doing about 1200 miles a week! Going at this rate, regular oil changes would take place monthly. Now I change my oil every 10K.

    Cheers,

    Sean
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    Oct 11, 2012 12:27 AM GMT
    if it has a turbo, you should run synthetic.
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    Oct 11, 2012 12:50 AM GMT
    xrichx saidYeah, I just don't agree with the OP's claim that switching to synthetic means you can automatically start changing the oil at 8K intervals instead of 3 - 5K. That seems a little far fetched.



    I run AmsOil and have never changed it until its around the 10k mark, truck is 6 years old now w 340,000km no engine issues yet
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    Oct 11, 2012 1:07 AM GMT
    My partner's car is used mostly locally, and my SUV does mostly short runs, too, with a long ride here or there, so I use full synthetic in both, and change it every 4 months. It's always less than 3,000 miles, but I can't leave it in there any longer. And I always change it myself. The old collector car gets conventional oil, changed every summer (by me). It's garaged, and I give it a run on the highway almost every time it gets started to avoid moisture build up.
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    Oct 11, 2012 1:18 AM GMT
    NewdDawg saidI'll quit blabbering now though as I beliebe I've more than answered your original question....

    Yay! Your first post! Yay! Welcome to the forums!