Good Info about Oil.

Discussion in 'Mechanic and Repair' started by Precision, Nov 28, 2006.

  1. whiffyspark

    whiffyspark LawnSite Fanatic
    Posts: 6,093

    Yeh I agree. Fram filters are known for failing as well
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  2. inHaliburton

    inHaliburton LawnSite Member
    Posts: 196

    Yup.:canadaflag:
     
  3. bigmower1

    bigmower1 LawnSite Member
    Posts: 158

    What is dyno oil, is it synthetic, I never heard of it. If you use synthetic and switch back over to regular oil, it will most certainly damage you engine, possibly destroy it. Now when I re-assemble engines, I most certainly use assembly lube, on the cam the lifters even the rods, I use different lube for the piston rod bearings. I have rebuilt countless engines, I mark carefully every rod and lifter, I even use two marked out boxes for one and two, have holes in them for the lifters and the rods, so they do not ever drop, and inspect everything very carefully. The motor that got damaged from switching from synthetic oil back to regular oil I rebuilt and it seems to be fine now, I had to buy a new cam, the lobes were worn down and new lifters, and rods, The bearings had some slight blemishes on them, but I felt that they would be okay. Luckily when the engine started to loose power and and was hard to start, my friend immediately told me and the damage was not too bad, but the motor has some hurting on it. I put back in it one third quart of Duralube, and then 10w30 Mobil 1 synthetic oil, the high mileage type. So far it seems to be okay, he says, but I told him we will see in a couple hundred hours.
     
  4. whiffyspark

    whiffyspark LawnSite Fanatic
    Posts: 6,093

    Dyno oil is regular oil.

    It's simply not possible for an engine failure between switching oils. You're still putting an oil in it.

    Synthetics are just stabilier and handle heat better. Switching between oils isn't going to do anything that can result in metal to metal problems in your engine.

    It's just not possible
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  5. inHaliburton

    inHaliburton LawnSite Member
    Posts: 196

    "Dyno" oil is non-synthetic, out-of-the-ground oil. Non-renewable. The kind we are running out of.
     
  6. bigmower1

    bigmower1 LawnSite Member
    Posts: 158

    Well I talked to someone about it, and he told me that actually you can not switch back from full synthetic oil to regular oil because of the molecules, they conflict in some way. I asked him how about blended oil, you know synthetic oil and regular blended, and he said that blended oil you can switch back to regular oil, but why risk it. This is what he told me, he said that he called Mobil and asked. I have never known him to lie to me. He also told me that they have been using synthetic oil for many years in the military before it came out. Especially in turbine engines, which get really hot, When I change the oil, it is not even broken down, it looks good except it gets dirty, and turns a little blackish brown, but never tar black. I bet if I just change the filter it would be fine re use, but I change it anyway.
     
  7. inHaliburton

    inHaliburton LawnSite Member
    Posts: 196

    This info should be available on bob is the oil guy website. To me, it doesn't make sense not being able to switch back to dino oil. I did it many times over the 7 years I had my JD 737 mower with a Kawi engine.
     
  8. bigmower1

    bigmower1 LawnSite Member
    Posts: 158

    Dino oil must also be synthetic also, I never even heard of Dino oil, where is it sold at.
     
  9. whiffyspark

    whiffyspark LawnSite Fanatic
    Posts: 6,093

    It's standard oil man. Just not synthetic

    It's what everyone used before synthetic
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  10. Patriot Services

    Patriot Services LawnSite Fanatic
    Posts: 12,526

    1.rounded cam lobes are an installation issue. Period.

    2.Duralube is snake oil additive that is not a magic mechanic in a bottle. Nothing should ever be added to oil except more of the same oil. Those shelves full of oil and fuel additives are for parts store profit and nothing more.
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