{"id":1102,"date":"2017-05-01T20:53:27","date_gmt":"2017-05-01T20:53:27","guid":{"rendered":"http:\/\/techmax.ca\/BMW-repair\/?p=1102"},"modified":"2017-05-01T21:47:29","modified_gmt":"2017-05-01T21:47:29","slug":"my-cars-engine-burns-oil","status":"publish","type":"post","link":"https:\/\/techmax.ca\/BMW-repair\/my-cars-engine-burns-oil\/","title":{"rendered":"My car’s engine burns oil"},"content":{"rendered":"

Why do I need to top up my oil between oil changes<\/strong>?<\/p>\n

It’s normal for cars to burn a little oil<\/strong> as they age. The most common\u00a0 reason why\u00a0 an engine loses oil internally, the oil is slipping past the piston rings.\u00a0 All cars have it happen to some extent, especially when revving the engine at high RPMs.<\/p>\n

This is usually older cars’ problem, where the piston rings are a little worn. It is not a big\u00a0 problem unless it is excessive. But it can also happen on some newer cars.<\/p>\n

There are many different reasons for more oil being consumed<\/strong> by modern engines, here goes the list.<\/p>\n

Today’s modern combustion engine is a super slim, lightweight marvel of engineering. The internal moving parts has been reduced “optimized” for the lightest possible to reduce fuel consumption, including the pistons’ size. The rings has been also slimmed down with low ring tension. This minimize friction, which result in more oil to be able to escape and get burned in the internal combustion engine.<\/p>\n

Worth to note; the stoichiometric ratio<\/strong>, relatively speaking is fixed, which is 14.7 kg of air with 1kg of fuel provides the cleanest most effective combustion. This particular ratio cannot be changed too far in either direction, or the combustion becomes inefficient in the long term.\u00a0 This is why the engineers had to look for different solutions. This resulted in lighter more efficient internal components, including lighter weight motor oils.<\/p>\n

Therefore\u00a0 lighter weight motor oils are chosen to reduce internal friction with minimized pumping losses and being lighter also easier to burn.<\/p>\n

Definition of is stoichiometric ratio;<\/p>\n

Combustion engines’ stoichiometric ratio\u00a0 (AFR) is the mass ratio of air to fuel present in a combustion process.<\/p>\n

We could go further into the additional technical details, like running the crankcase ventilation under high vacuum to minimize reduce the pumping losses.<\/p>\n

As you can see, there are multiple reasons for the oil consumption of a modern high tech internal combustion engine.<\/p>\n

Last but not least the government legislated corporate fuel economy worldwide. This also having a serious effect on the design and manufacturing of today’s efficient internal combustion engines.<\/p>\n

Thank you for reading. If you have any questions we are happy to answer them in person.<\/p>\n

Wish you all the best from Techmax<\/a><\/p>\n

Related:<\/p>\n

The importance of proper oil changes<\/a><\/p>\n

Recommended Synthetics Motor Oil for BMW<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Why do I need to top up my oil between oil changes? It’s normal for cars to burn a little oil as they age. The most common\u00a0 reason why\u00a0 an engine loses oil internally, the oil is slipping past the piston rings.\u00a0 All cars have it happen to some extent, especially when revving the engine … <\/p>\n

Continue reading “My car’s engine burns oil”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[429,426,428,427],"class_list":["post-1102","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-definition-of-is-stoichiometric-ratio","tag-my-car-burns-oil","tag-stoichiometric-ratio","tag-why-my-car-burns-oil"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t