ENGINE OIL VOLUME LOSS IS NORMAL…WHAT CAUSES IT?
Posted on July 19, 2019 17:05:43 PM

ENGINE OIL VOLUME LOSS IS NORMAL…WHAT CAUSES IT?

Engine oil volume loss

 

All internal combustion engines, regardless of fuel type and design allow a certain degree of oil loss as it goes through normal operation. Engine parts and components have running clearances that allow them to move and function. Piston and valve assemblies are never gas-tight or oil-tight – they need to be able to move freely for proper combustion to produce power. Therefore, it is normal for some of the lubrication to slip into the chambers and burn off as the engine runs.

Different manufacturers have different acceptable amounts of oil loss between oil changes. But generally, a passenger car engine that has less than 50,000 miles (80,000 kilometers) on it should not lose more than a quart (approximately 1 liter) after running 3,000 miles (about 5,000 kilometers). As an engine gets older and runs further, oil consumption is expected to increase as well because the clearances widen due to wear and tear and allow more oil to slip through and burn off. Also, diesel engines consume more engine oil than gasoline engines and those with turbochargers are even higher still.

Motorcycle engines which have higher RPM’s and running temperature and small oil sumps are particularly vulnerable to high volume of oil loss. The habit of many small bike and scooter enthusiasts to modify their engines and tweak their fuel systems to produce more horsepower also increase the rate of burn off of engine oils.

Aside from burn-off, another way for excessive oil loss to occur is through leaks. Worn seals and gaskets, loose filler caps, ill-fitting oil filters and drain plugs are the common areas to check for leaks. The older an engine gets the more likely that leaks develop.

Evaporation can also be a factor as different engine oil formulations have different volatility characteristics. A standard test for volatility is the ASTM D5800 (NOACK Method) which measures the amount of oil that evaporates after being subjected to 250 degrees C (482 degrees F) for 1 hour. Normal engines run at 195 to 220 degrees F so this test is extreme and designed to simulate abnormally high temperatures. The volatility rating is a percentage of oil loss after the test.

Engine oils have corresponding standards depending on their performance ratings. Pertua Exello diesel engine oil which meets API CJ-4 standard has a 5.9% loss rating (versus a maximum allowable of 13%). Pertua Apex gasoline engine oil which is compatible with API SN has a 7.3% loss rating (versus a similar maximum allowable of 15%). Pertua Powertec motorcycle engine oil which has an API SL rating had only 3.6% loss rating (versus a maximum allowable of 15%). Using quality engine oils like those found in the Pertua range assures you of formulations that are enduring and less volatile under extreme operating temperatures.

 

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Comments (25)

  1. Lyle Acosta

    Reply

    Thank you pertua… My motorcycle has been running more smoothly than it was before… I ride mio i 125 which is susceptible to oil consumption.. Now my scoot does not consume oil anymore. Thanks pertua.

    • Pertua Admin001

      Reply

      Hi Joaquin Because Pertua has an Oil and Metal Treatment that gives you a good benefits to your engine.

  2. Reply

    Why does oil thickens even before it reaches 5000kms. Also my engine is lossing 25% of oil every 5000km change oil interval, is this normal. I use your exello oil for my hyundai accent crdi diesel engine 2017 model. Thanks in advance.

    • Pertua Admin001

      Reply

      Hi Sir Joven, Regarding to your concern, engine oil loss only allows “certain acceptable” amount or degree of loss for engine parts especilly pistons and linings have a running clearances of the each parts especilly pistons and linings for it to work and function properly. If the engine already losing an excessive amount of oil that is already beyond allowable loss of oil based on engine design on which it can be check on Owner’ Manual, you can check first if there are leakage from oil pan, gasket or drain plug. You can also visit your nearest service shop to check if there are mechanical repairs needed that causes the oil loss. Lastly, lubricant/engine oil has a multiple test before it released to the public and one of those is the NOACK Volatility Test by ASTM(an international standard for testing a specific material or product) on which the oil is subjected to 250°C of temperature (operating temperature of the engine usually ranges from 90.5°C to 104.4°C) for 1 hour. After which, the amount of engine oil per % will be measure and it should not be greater than 13% mass loss if its for diesel-API CJ4 and not greater than 15% mass loss if its gasoline-API SN. The Pertua Exello for our information got a 5.9% mass loss on which far lesser than the allowable %mass loss required to a Diesel-API CJ4 rating. We hope we had enlightened your concerns. For more information, you can read or review our article regarding “Engine Oil Loss” and visit our facebook page, Pertua oil for more interesting topics and discussion.

  3. Ag

    Reply

    Noticed using pertua oil did not have engine oil volume loss, unlike when another brand was used, have to add oil on the engine.

  4. Nick Isaac Caballero

    Reply

    Sa 4 years kung pag gamit ng PERTUA power tech..never pang nanyari skin na nag evaporate ng marami yung langis,sbhin n ntin nbababwasan pero hndi lahat nawawala..hndi ko na ssbhin kng anu motor gamit ko,pero yung motor n gamit ko kargado sya at gingamit ko pang drag. At mdalas pamasok sa trabaho.Simula nman na ginamit ko pertua pra skin good na good tong langis nla..

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