What do you truly think about synthetic motor oil?

that it is better than conventional oil, a lot of big truck OEMS even reccomend it for severe condition operation





also and this applies more to trucks changing all fluids to synthetics can give u noticable mileage gains less resistance on crankshaft rearend etcWhat do you truly think about synthetic motor oil?
I use synthetic in everything I own that has an engine. The lawn boy has synthetic, the line trimmer uses synthetic 2 cycle oil, and all three family vehicles have synthetic. At 3000 miles on dino oil, the oil is black. On synthetic, the oil is much cleaner.


Secondly, oil is the lubricant. The better the lubricant, the better the mileage. Synthetic has much less friction than conventional, especially after the first 1000 miles.





The price is the same because I change oil every 7000 miles instead of every 3000.





I tend to like amsoil and royal purple best, but of the majors, mobil one is great.What do you truly think about synthetic motor oil?
Unless you are driving in severe temperatures like Arizona or Alaska, or you are driving extremely hard like drag racing, the synthetic oils are not needed. Granted synthetic oil will not break down like conventional oil. However, you will still get impurities in the oil due to ring blow by. (which all cars have some blow by). It is these impurities that cause engine wear. Use conventional oil and change it along with the filter every 3000 miles.
Synthetic oils tend to not break down with heat as fast as regular oil. It is also good for small air cooled engines that get real hot. It is more expensive and you can not mix it with regular oils. It tends to stop the break-in of diesel engines.


Once your engine is seated in with maximum break in, then change to synthetic. My Cummins got 15 mpg at first, then at ~30,000 it was up to 19 mpg, then at 100,000 it was at about 21-22 mpg. Then I switched to synthetic. You can install a small micron oil filter and send the oil in to the seller for testing. Only a filter change is necessary for up to 100,000 mi or so. They can tell when the oil itself needs changed.
thats its a waste of money unless you have a true racing engine...


Synthetic oil was originally developed for high performance racing engines. Mobil tried to popularize synthetic oil for passenger vehicles back in the early 1970's. At the time, Mobil was promoting 20K or 25K oil changes with synthetic, but they soon backed down from this. Synthetic oil is a good choice if you have a vehicle with a high performance engine (in fact synthetic is required for many of these engines). It is also a good choice if your vehicle is operated in extremely cold climates. It has higher resistance to breakdown caused by heat and it flows better in extreme cold. Unfortunately for the synthetic oil industry there is virtually no advantage to using synthetic oil in a non-high performance engine that is operated in moderate climates. You probably could go a bit longer between oil changes with a synthetic, i.e. following the normal service schedule even if you fall into the severe service category, but I wouldn't advise this. In short, synthetic may give you the peace of mind of knowing that you are using an oil that is far better than necessary for your vehicle, but it won't reduce wear or extend the life of the engine. The mistake some people make it to wrongly extrapolate these benefits onto normal engines operated in mild climates, with the ultimate lack of any knowledge being manifested with statements such as ';synthetics provide 'Peace of Mind,' or 'Cheap Insurance,''; or other such nonsense.
My opinion....I use Kendall GT-1 regular oil in my Hotrod, and what the dealer puts in, in my Saturn...once the Saturn runs out of warranty, it will get GT-1 also


Synthetic may be better, but I've never had a problem caused by oil, so I can't justify the extra cost...





Change the oil when you are supposed to, and you won't have problems...
There's many types of ';synthetic'; motor oil. European synthetic is totally different from USA synthetic, for example. In Canada, synthetic means oil made from bitumen deposits (oil sands). Do your research!
I don't think there's anything wrong with it. I ran Royal Purple synthetic oil in my 9 second dragster.