Synthetic oil

[pjm47]

I currently have synthetic oil in my car.Can i chnge over to using regular oil

The reason i ask is because i was told once you start using synthetic you have to use it all the time,and if thats the case WHY?????

[Pescakl1]

That is not true at all: As long as you change your oil regularly, changing from synthetic to dino back and forth won't do anything to the car.

It seems the myth came from some cars'owners that did not change their oils for a while using dino oils, then use syn oils for some time.Since the old dino oils stayed too long in the car (oil not changed at proper intervals), it clogs some parts of the engine which dried some gaskets and other parts. Syn oils having more cleaning properties (more aggressive chemical components), it cleaned the engine exposing the dried gaskets. Since these dried parts are used to avoid leaks, they could not do their jobs and engines started to use some oil. Going back to dino oil did not resolve the issue.

But instead to blame the bad maintenance of the engine (the owners), it was easier to say that was caused by the oil. Syn oil was the new thing at that time, so it took the blame (as for now, thin oils are blamed for oil consumption, even if the problem still resides in the hand of the owner).

Maintain your car with any oil you can find on sale and it will work fine for a long time. The important part in changing oil is not the type of oil you use, but the fact that you change the oil.

[pjm47]

Thanks,what do you know as far as the Rogue goes. i put 3,000 miles on it in 5 months. Do i change the oil every 3months or wait until 3,000 miles in 5 months. Thanks

[Pescakl1]

It is all risk assessment: Are you afraid that you are going to have an engine problem under warranty or not?

The warranty is in use if you change oil every 3 months or 3750 miles whatever comes first for severe service, or 6 months or 7500 miles whatever comes first for normal service.If you don't want to be bothered with warranty claim if you have to fill one, you would better follow Nissan rules.

Another thing: Do you change your oil yourself or ask the dealer to perform it?A suggestion if you ask the dealer to do it, is ask him what interval is appropriate for your use in order to stay within warranty. If he recommends longer intervals than Nissan does, you'd better ask him to write it down for you as future reference.

But seriously, what is the chance (lack of it in that case) that your engine will blow up in the next five years if you take care of it by changing the oil regularly?

I have my opinion on that, but that is just my opinion, and since I don't want to be sued for anything happening on your car in the future, I will keep it for me.

[DanTheMan]

Personally, I think the three month thing is a joke, especially if synthetic is used. However with that said, as indicated above, due to warranty limitations you should go with sever/normal driving habits. My habits are really more like in between, but I will be going with the normal change out as I have done in the past. As long as you periodically run it hard/long to remove any water vapor, I really think you will be fine. Just my 0.02 cents worth.

[takeshi]

Thanks,what do you know as far as the Rogue goes. i put 3,000 miles on it in 5 months. Do i change the oil every 3months or wait until 3,000 miles in 5 months. Thanks

As stated above, if warranty is a concern then follow the maintenance schedule.

If it isn't, you can have a UOA (used oil analysis) performed to determine what would truly be a suitable interval for your vehicle and driving.