What would happen if I used part synthetic instead of fully synethtic oil?

Might sound dumb but im a girly girl lol


But... is it just the same as premium petrol and standard?What would happen if I used part synthetic instead of fully synethtic oil?
If its recommended you use flly symthetic you shold. It can withstand higher tempretures than part synthetic and will prevent ware on the engine betterWhat would happen if I used part synthetic instead of fully synethtic oil?
You need to check the owners manual for your car. It will say which type of oil you can use. Fully synthetic is usually better though...
Its not an easy question to answer. I worked in a plant making lubricants for an oil company and there are hundreds of different oil formulations. We used 280 different additives and produced Oils of varying degrees of ';sythetic-ness';.





There are two major factors in designing an engine oil, and believe me they are ';designed';.





The first is reducing wear to the engine of course.


The second is maximising engine performance.





Normal mineral oil is a product of crude oil distillation, it comes in different viscosites or thicknesses if you will.





Thick oil naturally protects wear between surfaces but creates more drag between them.





Thin oil is poor at preventing wear but good for engine perfomance.





As oil heats up it gets thinner and thinner, this is a pain to designers because they want the engine to be protected all the time, not just when its cold.





So they add chemicals to the oil to make its viscocity change less with engine temperature. These chemicals are artificially made or sythetic in nature, and they put a great deal of them into better quality oils.





So a semi-sythetic oil will have maybe 30% of one of these chemcials added to it. They are expensive. Fully sythetic oil is where they remove the mineral oil completely from the blend, so its pricey.





Should you use it??????


Well that largely depends on the age of the engine, its a bit of a waste putting very expensive oil in an old engine, you are better off putting a semi-sythetic oil in and making sure you change it + the oil filter regularly.
Fully synthetic is better, but if you don't have a very high performance car then semi synthetic will serve you just as well, you will never know the difference.
You get more mileage in between oil changes with fully synthetic oil. I change oil every 10000 km if I use FS oil. 5000 kilometers on other oils.