Amsoil Vs Mobil 1

Discussion in 'Mechanic and Repair' started by Landrus2, Jan 29, 2008.

  1. Landrus2

    Landrus2 LawnSite Platinum Member
    Posts: 4,812

    Do you guys find any difference in these two brands of oil. is it worth it to run these oil brands ?
    I run Mobil 1 on all my gas equipment from new last year. I hade a problem with a Kawasaki 15hp also running Mobil one after 500 hours motor was knocking very loud.
    I usually get 2000 hours + out of these motors :drinkup:
     
  2. Exact Rototilling

    Exact Rototilling LawnSite Fanatic
    Posts: 5,359

    Specifically what weight of Mobil 1 were you running? . . . . when it was making that noises?

    Currently I run some older stock of M1 15w-50 in my Toro 21" and my Brigs powered Tiller. No issues what so ever.

    As far as running Amsoil yes it's good oil but why run $6+ a quart oil when you can run a slightly less superior oil for well under $4.50 a quart. Extended oil change interval for mowers, tillers etc. is not a good idea.

    The only Mobil 1 oils I would run in a mower would be their more stout products:

    M1 15w-50 higher level of anti wear additive
    M1 5w-40 Turbo Diesel truck also labeled as Delvac 1 same basic oil different bottle
    M1 High Mileage 10w-30 has more of the good stuff
    M1 High Mileage 10w-40


    I'm also a big fan of Shell Rotella 5w-40 also a diesel and gas rated oil. Also very popular with motorcycles of all sorts

    Others also run the 15w-40 Diesel rated oils.
     
  3. Ridin' Around

    Ridin' Around LawnSite Senior Member
    Posts: 266

    While my stance on this has been pretty clear, it's for good reason. Amsoil is a great product. If you check, there is a price sheet listed in the Amsoil price thread. I buy it in barrels, my SAE30/ 10w-30 for my air cooled engines runs $468 for a 30 gallon drum. By my math (468 divided by 30 divided by 4) equals less than 4 bucks a quart. Now you're gonna have tax and freight, if you can't get it from a warehouse or your dealer to pick it up for you. But the price thing is not a good excuse for using a product that you yourself said is not as good. You just sold yourself!
     
  4. UpNorth

    UpNorth LawnSite Member
    from NE,US
    Posts: 203

    I know this is sorta off topic, but I swear by Lucas Oil Stabilizer and use in all of my equipment and vehicles. I put it in my Jeep CJ-7 a few years back and couldn't believe how it quieted down the motor. Since then I put it in everything.

    As far as running Mobil 1 oil, don't get em wrong it great oil, but with conventional oils getting better and better, and suggested times on oil changes increasing, I don't see the need to run synthetic.
     
  5. Exact Rototilling

    Exact Rototilling LawnSite Fanatic
    Posts: 5,359

    You might want to check this out http://www.bobistheoilguy.com/images/lucas/lucas.htm :confused:
     
  6. WJW Lawn

    WJW Lawn LawnSite Bronze Member
    Posts: 1,330

    Im an Amsoil man myself....I put it in everything I own.
     
  7. John Gamba

    John Gamba LawnSite Fanatic
    from ct
    Posts: 10,812


    What Weight where you running with the Mobil one. The kaws like Straight 30, ive never seen that in the Mobil One line up.
     
  8. 44DCNF

    44DCNF LawnSite Bronze Member
    Posts: 1,460

    Also, were you changing the filter at the recommended interval, which is at what, 200 hours? So you should have put three new oil filters on in the 500 hours - the new one at the installation, one at 200 and one at 400.
     
  9. John Gamba

    John Gamba LawnSite Fanatic
    from ct
    Posts: 10,812


    I change the oil and filter the first 5 hours and 100 hours after that.
     
  10. 44DCNF

    44DCNF LawnSite Bronze Member
    Posts: 1,460

    I meant to quote joesimoes2 and was asking him that question. Sorry for the confusion. I've noticed in the Kawi 12.5 manual as well as some others brands, they say using a multi weight, they will tend to consume some oil.
     

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