Why You SHOULD NOT Switch To Synthetic Oil-Car Advice

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How to Switch to Synthetic Motor Oil

Using synthetic oil of the proper viscosity can increase your mileage interval between changes. Synthetic oil is preferred or even necessary if conditions are quite cold. 0w oils are always synthetic formula and are made specifically for extreme cold. 0w oil does not thicken as much when cool/cold, allowing the starter to turn the engine easily and it slightly reduces the resistance to flowing after start and while warming up, possibly saving a bit of fuel and start-up wear.


  1. Start with a vehicle that is in good usable condition.Synthetic lubricants will not fix a worn out or abused vehicle.
  2. Choose a synthetic lubricant that has the API (American Petroleum Institute) seal of approval on the container.

Community Q&A

  • Question
    I have a Dodge Ram 1500 with 104,000 miles on it. I would like to switch to synthetic oil. Is there anything I need to do besides draining the oil and replacing the oil filter? I'm worried about the residual conventional motor oil that's left on the pistons mixing with the synthetic.
    wikiHow Contributor
    Community Answer
    The small amount of old oil left shouldn't affect your truck and will flush out with the next oil change with the new synthetic.
  • Question
    Does anything special have to be done to switch to synthetics?
    wikiHow Contributor
    Community Answer
    No, just change at your normal interval, but the life is much longer with synthetic oil.
  • Question
    When is it too late to change over to synthetic oil?
    wikiHow Contributor
    Community Answer
    It is never too late, and the switch can occur whenever you wish.
  • Question
    Are there any consequences from switching from synthetic to regular motor oil?
    wikiHow Contributor
    Community Answer
    You can expect more frequent oil changes: 10000 miles synthetic to 5000 miles regular oil.
  • Question
    Can I switch to full synthetic or semi-synthetic oil?
    wikiHow Contributor
    Community Answer
    Yes, you can.
Unanswered Questions
  • Can I switch from mineral oil to fully synthetic oil in a 2 stroke bike? Will the process damage the seals or cause it to leak?
  • Can I change from a synthetic oil to a mineral multigrade oil?
  • What is MA2 rating in oil?
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  • Be certain to use the weight (Example: 5W-20; 5W-30) of synthetic oil recommended for your vehicle and the weather conditions in which it is driven.
  • Before driving the vehicle after an oil change, be certain to start and run the engine to full oil pressure. Then, check for any oil leaks around the filter seal and pan plug. After shutting the motor off, wait three or four minutes for the oil to run back to the oil pan; then check the level of oil with the dipstick to be certain it is full.
  • Engines can be switched from or to synthetic oil at any time, as there is no real chemical difference.
  • Plain quality filters last as long as most people are willing to use the oil it filters. 10k miles is fine for even basic grade filters and the "one" oil company that leads the synthetic market states that no special filter is needed.
  • Synthetic oils should not be considered as cost-effective, but rather a luxury item. Oil companies and auto manufacturers agree that change intervals should not be extended beyond what is recommended in the service manual, despite the use of synthetic oil. Still, cost-effectiveness of synthetic oil can be obtained by extending the change interval of the oil filter to every 5,000 miles (8,000 km) (top off after changing) and of the synthetic oil to every 10,000 miles (16,000 km). This regimen has been performed with very successful results.
  • All oils pass a seal compatibility test, but leaks can occur in older engines that have seals which are varnished over from the inside and have become dried out. High detergent levels in synthetic oil can clear away the "false seals" and allow some leakage that should stop after the once-dry seals are re-wetted and swell.


  • Synthetic oils vary in quality and ingredients. Most should be considered better than plain oil, but only a few exceptional ones are on the market. European specs on the bottle from auto manufacturers indicate a higher quality and longer service life.

Things You'll Need

  • If you choose to change the oil yourself, you need to know how much oil is needed for your vehicle. You can find this under the Oil Capacity section of the Maintenance or Specifications table in your vehicle Owner's Manual.
  • You will need a wrench or socket to fit the drain plug and a filter wrench for removing the oil filter.

Related wikiHows

Sources and Citations

  • Articles and discussions on synthetic oils and other mileage enhancing products tested.
  • MPGResearch.com forum with discussions on synthetic oils, fuel additives and any other mileage related technologies.

Video: Should you switch to full synthetic motor oil? - Auto Information Series

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Date: 06.12.2018, 10:21 / Views: 62535