switching to synthetic

So I noticed today that I am due for an oil change. So I swung by my local auto-zone and picked up a 5qt. jug of Mobil 1 Full Synthetic for $19. My quesiton is, how much longer of an interval can a person go between oil changes with full synthetic? I have always used conventional oil and changed every 3k, so needless to say the syn. is new to me. thanks in advance

 

I just did the same thing. I plan on going 5k miles on the oil change.

 

They say 5k for synthetic. I would say depends on driving conditions, dirt road driving, etc. I changed to M1 and will keep changing at 3k cause I don't drive 1k a month and I drive on dirt and salty roads and cold conditions.

 

Ok I work for an autozone, and am wondering how you got Mobil 1 5.28 qt jug for $19? That is a damn good price.

 

walmart my friend....if they have it on sale.

 

Yeah I know that wlamart is really cheap, but the OP said he got it at autozone. Our price is $28 i believe

 

damn...thats what i get for skimming i reckon.

 

Yeah I guess so.

I'm pretty curious, although I work for autozone, we dont even get discounts on oils, which is total BS, but thats another story.

I wonder if one autozone was doing a clearance or something?

 

id say change at 5k

 

could have been......i think its a regional thing with alot of those chain stores.

 

it must have been a special...because they had it sitting right when you walk in the front door instead of on the shelves.

 

depends on driving habits. if you bought a cheaply made filter. then my answer is often. the filter plays a huge part. not just the syn oil. the best advice i can give is look at the dipstick to determine when to change. but i wouldn't go over the manufactures change intervals.

 

If you are really interested in a scientific answer for your oil change interval question then send a sample of your oil off for an oil analysis after 5k miles.

 

Yes, I forgot about the filter. I have a napa gold so Im sure the filter could easily go 8k but im changing it at 5k just to be safe.