So,my car was running on mineral oil since the begining and I decided to switch to mobile1 synthetic oil at 50k miles.At first,my car was consuming oil(after the switch),so i started to panic and did some research(thanks to some experts here).What I found out that when you switch it's normal for your car to consume a bit of oil for the first 2-3 oil changes due to the gunk the other oil was leaving behind.Now that the synthetic oil cleans better,it removed all the gunk wich will allow the seals to sit properly and do their job.So if you switch just keep an eye on the oil level and top it off till you next oil change and slowly but surely your car will stop consuming oil and your engine will run a bit smoother (not that it's not smooth already,i noticed it,a bit.).I also use KnN synthetic oil filter.Next oil change,Blackstone labs will analyze the oils and we'll see where the engine stands.

 

nice to know I just put mobil1 synthetic in mines last week, which was my first oil change I'm not sure what the last owner put in there. I should prolly check on my dip stick.

 

I dont think by running synthetic oil will clean all the gunks out of your engine that's already there for many years. I think you need AUTO-RX to really clean your engine up.
But if you run synthetic from the beginning, then It would be alot cleaner.

 

Where you are at in Canada you will notice better fuel economy, easier starting in cold weather, and better acceleration. Been running mine on mobil one since I got it. As for a cleaner engine that will happen in future. Ran my last three cars on Mobil one with excellent results.

 

I agree. Oil cleaning an engine is an urban myth

 

You may wish that synthetic oil won't clean or loosen all the gunks inside your engine, because they will clog up the oil filter if allowed to move around.

 

I highly recommend using 0w20 mobil1 synthetic oil. It is expensive but it indeed makes it starting easier in cold mornings and also returns better fuel economy

 

Why does it consume oil at the begining when you switch to synthetic for the first few oil changes and then it stops?

 

Synthetic oil does clean to a degree if you're switching on a higher-mileage engine, hence the need to run shorter drains for the first few uses to allow for engine cleaning, also to avoid overloading the oil filter. Auto-RX does work well but may not be necessary.

The Napa Gold oil filters or the Carquest "Premium" filter will provide equal or better filtration and flow than the K&N filter for 1/3 less...unless of course, the bolt is that important to you...

Anyone in Canada should consider running the Esso XD3 0w-30 from an Esso Bulk Dealer...it is slightly thicker (might have slight loss of power and MPG), but costs significantly less than M1.

 

pureolater pureone, mobil one filters are top of the line, along with wix and motorcraft. k&n has alot less pleats which means less surface area to clean the oil. and changing your oil to synthetic didn't "clean the engine". synthetic is a better oil b/c it won't leave a carbon deposit like dino oil. and i am surprised your engine was consuming oil?? i don't think the previous owner ever used synthetic but when i got the car at 112k it never used oil and at 122k with 10k now using synthetic is still doesnt use oil.

 

all oil used would leave carbon deposit. What do you think synthetic oil is, it's still oil doing it's job lubricating engine parts.

 

Loosening gunk could cause leaks. Once it's gunked, don't mess with it or you may have to replace the seals.

 

So many opinions! Are there any proven facts /tests to support any of these "opinions"?I'll do a search and see what i come up with.

 

Ask any mechanic. The gunk plugs the holes in the gaskets and such. Cleaning an older car out would remove the dirt sealing the gaps and cause leaks.

I'm not saying run dirty oil...I'm just saying don't make drastic changes or make a special attempt to put cleaning agents in older cars.

 

I understand,but how do you explain the fact that my car was consuming oil at first and now it stopped?(after i swithed to M1)

 

Perhaps I should have clarified...I'm not specifically talking about your car. Any car 100k+ probably has gunk keeping the seals tight. If you attempt to clean it out you may cause a leak.

 

Buildup can cause a false seal in engines, hence the exposure of leaks upon the usage of synthetic oil in higher mileage engines. The usage of a chemical cleaner and seal restoration substance such as Auto-RX will clean the engine and chemically condition the seals, but if the seal was physically damaged beyond chemical help and buildup was once keeping it from leaking, and the buildup was removed, then you're SOL.

Its quite possible that M1 cleaned up the ring packs in your engine and allowed for a better seal, thus reducing or eliminating the oil consumption.

 

Oil won't disappear by itself. It either got leak out or got burnt off.

 

Let me tell you my real life experience with Mobil 1 synthetic oil on my previous car. It was a '90 Integra GS, heavily modded, and had been using Mobil 1 ever since the first oil change at 3K Km. Three/four years later, it started to leak engine oil, and I eventually had to replace almost all gaskets over the years. Some gaskets such as oil pan gasket had been replaced twice to stop the reoccuring leak. At around the same time, the engine started to burn oil - yes synthetic oil. First it was 1/4 L every oil change, then to 1/2 L, and finally a full 1L bottle every two weeks. Eventually I got fed up with keep buying expensive synthetic oil to feed the car that I decided to switch back to conventional motor oil. Then there was no more oil leak from the engine, but oil burning remained. The only cure is an engine rebuilt to replace all the internal worn-out rings and parts. Since then I'll laugh at anyone who said engines won't wear out when using synthetic oil. Now my TL-S is running only on cheaper but quality conventional oil.

 

So you're saying that synthetic oil is no good? Could it be that you wheir kicking the shit out of your car and that caused your car to burn oil and not the M1 itself?

 

 

Hey Guys, I'm a 3G TL lurker, and found this thread interesting. Let me throw in my two cents' worth of experience.

My last two cars - '95 Maxima SE and '01 CL Type-S both were run with Mobil One for the entire time I owned them. Both cars were run over 100K miles - the Maxima 145K and the CL 105K. Neither experienced any leaks, burning, etc.

The main reasons I started using Mobil One were articles in both Car and Driver and Road and Track, as well as the fact that you can double the time between oil changes. Since I drive 2K per month commuting, that was a big convenience factor to consider.

I can't comment on the beneifits of changing to Mobil One on a used car, but my expereiences have been nothing but positive.

gurney

 

When I kicked the shit out of my car, isn't the synthetic oil suppose to prevent the internal from wearing out. The engine won't burn oil unless the rings and seals are weaing out. All I'm saying is that synthetic oil won't prevent engine internals from wearing out despite TV commercials said it will.

On the other hand, synthetic oil works well in extreme cold temp. especially before the engine has fully warmed up because of its low viscosity at low temp. whereas cold conventional oil will become too thick to lubricate properly. It also works well in extreme hot temp. because the all synthetic content prevents it from breaking down. So synthetic oil is only better if you're running your car at extremely cold or hot temp., otherwise conventional oil is just as good if changed at regular intervals.