No announcement yet.

Fully Synthetic vs Synthetic Ester based???

  • Filter
  • Time
  • Show
Clear All
new posts

  • Fully Synthetic vs Synthetic Ester based???

    Going to buy some Silkolene oil; However can some one tell me the difference bewteen
    Fully Synthetic vs Synthetic Ester based?


  • #2
    ester based seems the go

    10W40 Motorcycle Oil - Fully Synthetic


    • #3
      Originally posted by alpha View Post
      Going to buy some Silkolene oil; However can some one tell me the difference bewteen
      Fully Synthetic vs Synthetic Ester based?


      About $10 a litre ...........

      Seriously, the ester based is the best but is it worth it over normal snthetic?

      Women are like motorcycles, they should be ridden hard and kept well lubricated ...


      • #4
        Are they not the same? I was under the impression that a fully synthetic oil is ester based.


        • #5
          Originally posted by gongzee View Post
          Are they not the same? I was under the impression that a fully synthetic oil is ester based.
          the other major type is PAO


          Synthetic Base Stocks
          Synthetic motor oils are man made oils from the following classes of lubricants:
          Polyalphaolefin (PAO) = American Petroleum Institute (API) Group IV base oil
          Synthetic esters, etc = API Group V base oils (non-PAO synthetics, including diesters, polyolesters, alklylated napthlenes, alkyklated benzenes, etc.)

          Hydrocracked/Hydroisomerized = API Group III base oils. Chevron, Shell, and other petrochemical companies developed processes involving catalytic conversion of feed stocks under pressure in the presence of hydrogen into high quality mineral lubricating oil. In 2005, production of GTL (gas-to-liquid) Group III base stocks began, the best of which perform much like polyalphaolefin. Group III base stocks are considered synthetic motor oil only in the United States;[13] elsewhere they are not allowed to be marketed as "synthetic".

          Semi-synthetic oil
          Semi-synthetic oils (also called 'synthetic blends') are blends of mineral oil with no more than 30% synthetic oil. Designed to have many of the benefits of synthetic oil without matching the cost of pure synthetic oil. Motul introduced the first semi-synthetic motor oil in 1966.[14]
          Lubricants which have synthetic base stocks even lower 30%, high performance additive packs consisting of esters can also be considered as synthetic lubricants. Ratio of the synthetic base stock is generally used to define commodity codes among the customs declarations of tax purposes.

          Other base stocks help semi-synthetic lubricants
          Group II and Group III type base stocks help to formulate more economic type semi-synthetic lubricants. Group I, II, II+ and III type mineral base oil stocks are widely used in combination with additive packages, performance packages, ester and/or Group IV polyalphaolefins in order to formulate semi-synthetic based lubricants. Group III base oils are sometimes considered as synthetic but they are still classified as highest top level mineral base stocks. A Synthetic or Synthesized material is one that is produced by combining or building individual units into a unified entry. Synthetic base stocks as described above are man-made and tailored to have a controlled molecular structure with predictable properties, unlike mineral base oils which are complex mixtures of naturally occurring hydrocarbons.


          The technical advantages of synthetic motor oils include:[citation needed]
          Measurably better low and high temperature viscosity performance
          Better chemical & shear stability
          Decreased evaporative loss
          Resistance to oxidation, thermal breakdown and oil sludge problems
          Extended drain intervals with the environmental benefit of less oil waste.
          Improved fuel economy in certain engine configurations.
          Better lubrication on cold starts
          Longer engine life
          The best protection under extreme temperatures within the engine and the best protection against hot spots for less oil burnoff,

          The disadvantages of synthetic motor oils include:
          The lower friction may make them unsuitable for break-in (i.e. the initial run-in period of the vehicle) where friction is desirable to cause wear. However, improved engine part machining has made break-in less critical than it once was. Many modern cars now come with synthetic oil as a factory fill.
          Potential decomposition problems in certain chemical environments (predominantly in industrial use.)
          Potential stress cracking of plastic components made of polyoxymethylene (POM) in the presence of polyalphaolefin (PAO).
          Synthetics do not hold lead in suspension as well as mineral oil, thus caution is advised when the engine is run on leaded fuel.[citation needed] As an example, leaded fuel is still commonly used in aviation (avgas).[17]

          Synthetic oils are not recommended in automotive rotary engines.



          • #6
            Originally posted by peter600 View Post
            the other major type is PAO
            Oh ok. So when people say fully synthetic it generally refers to PAO?


            • #7
              I'd say it refers to any motor lubricant man made rather than sucked out of the ground via a drilling rig....