we all use the same oil mobile 1.

the shop says 3-5
dealers says 10k?


how do we test this?

 

http://forums.maxima.org/showthread.php?threadid=100060

 

I've never heard of anything like this. Changing a cars motor oil every 5K miles is a good idea for any car. Does this then mean I30/35 owners only need to change their motor oil every ~10K, while Maxima owners have to every 5K miles? It makes no sense.

 

thats alot of reading hehe

time to read

 

BMW recommends 15K as do many other luxury cars. Put it this way, the people saying every 3K are the oil manufacturers and oil change shops. They stand to make more money obviously. The car makers want their cars to seem more reliable, so 10K+.

 

BMW can go 15K because they use really good filters too, it's not just the oil. Everyone here is right though, as a general rule 3K is bull, with a few exceptions.

Does Infiniti pick up any of the maintenance tab now at all??

 

BMW has 15K oil changes on all their new cars because they come from the factory with synthetic oil. BMW service agreemenet (lease car) will change your synthetic oil every 15K or earlier for you.

BMW also states that if you use dyno motor oil, you should follow the oil mfg. reccomendations on oil change intervals. Usually 3K - 5K

I do think the oil companies place the idea of 3K oil changes out to profit against. We all know from oil studies, 5K or more is sometimes sutable.

This statement makes no sence at all.

 

Maybe I worded that badly, but all I was saying is that 15K intervals make a car seem more reliable. Like 100K platinum plugs, etc. Stating the car can go 15K without an oil change is analagous to saying it can go 100K before a tuneup. The original post asked why if we all use Mobil 1 there are different recommended intervals, I answered his question.

 

my old boss's Z3 get's oil change every 15,000 miles... she didn't know that.. so she took it in on 3,000 miles and ask the dealer to change it.. they won't even change it for her.. told her to come back when "change oil" light come on...

 

Lots of info on this forum about oils. http://forums.maxima.org/showthread.php?threadid=100060

Quality is everything. Amsoil tests much better than Mobil 1, which I've been using. After reading about it here and doing further research, I just signed up an account with them and will be switching to their oil and filter ASAP. Here's where you can get some info on it (shameless plug for my new venture):
http://www.bestsyntheticoil.com/memb...an/index.shtml

 

Aha! Yet another post showing that Castrol Syntec, the bogus synthetic, out-performs Mobil 1. The evidence is right there. When Mobil 1 changed to "tri-synthetic" they produced the same stuff as Castrol. Mobil 1 is no longer the true synthetic that it used to be. "tri-synthetic" is marketing ho hum nonsense to throw you off.

Of course Amsoils is the Rolls Royce of Synthetics, but since I change my oil evey 5K miles or so, I can't justify that purchase, even though I know I can leave it in for 15K miles or more.

DW

 

I'm currently sitting on an analysis from one of our members with Syntec that would cause me to not recommend it under any driving conditions. The first alarm was with njmaxseltd's analysis that is currently in the spreadsheet, but I don't like drawing conclusions too early. However, after this second one it seems WAY too sensitive to filter type as well as driving conditions. A good dino oil like Pennzoil tests out much better than the Syntec stuff.

Mobile has consistently tested out well with OEM Nissan filters, although I agree it isn't as good, it's forumulation process is still superior to what Castrol does.

 

75$ for amsoil 2.5 gallon?
is that enough for one oil change?

wat does the dealers use? mobile one right?

 

2.5 gal is enough for 2 oil changes.

Nissan Dealers used dino oil from local bulk distributors like Cosby, Kendall, Valvoline, etc, etc. My local dealer uses Valvoline.

 

I was also foolish and only used quaker state full synthetic but in any case, I used to change my oil every 6K, 7K at the most. Certain cars like ahem, the on in my sig... you HAVE to change the oil at 3K... if you want to continue to have turbo's. Some people even change at 2K..

 

Yeah, I know turbos. They cook the oil something cronic, like "this is your oil on drugs"

I had a gen III supra turbo before, and after somevery spirited driving at night, I would stop the car and leave it idling, pop the hood and see the turbo glowing orange. Man, talk about some serious heat!

DW

 

no way there is no way to control how much oil is going to be burned...i change mine ever 3000 miles and there is a huge difference. i would say this is the #1 maintenance job that is critical for the lasting of your car.

 

 

Gee, if you burn a quart of oil every 750 miles, wouldn't this be almost a complete oil change in 3,000?

 

Its an advantage to automakers to have longer oil change intervals because it decreased the maintance and cost-per-mile costs that go into publications such as Consumer Reports.

Changes of that length with Syn oil does make since, GM raised the computer-calculated oil change feature on C5s (in 01) from a max of 10k to 15k miles between changes b/c the engines they tore down showed so little wear, C5s use Mobile 1.