you never have to change your oil. in grand trismo my z has like 20 k miles and i havent changed the oil and it runs amazing =p

Thing makes me laugh often is people will spend tons of money on synthetic oil and then use a cheap crappy oil filter. Oil filter in my opinion is more critical than brand of synthetic oil that is approved for our cars.

If you have a good filter and your putting mostly highway miles on your car there is no reason you can't go for 5000 miles safely.

I'm not a fan of keeping contaminants in motor much longer than that.

déjà-vu all over again...:facepalm:

U got jokes

You can't base it off color, why not do an oil analysis to see the real condition of the oil?

not worth the trouble. i rather just do the oil change at a shorter interval

Castrol Fully Syntheic Oil. I change every 3000 miles.

It will do a few things for you--- Oil Analysis
-Give you the status/condition of your motor
-Confirm that you can or should change later
-Save you money for something else or your savings account



Educate yourself soon - Here is a news article and analysis of the issue from April 2012:
http://autos.sympatico.ca/maintenanc...d-for-your-car

I get a page cannot be found message.

Do not listen to fuzzywuzzy.

Redline is good. I will have a new UOA soon to verify, but check out the Oil Nerd's thread where I have posted data.

However, regardless of oil, I have (tentatively) concluded based on several different 370's UOA's that the optimal interval is about 4K for mixed city highway driving (not surprisingly, this is close to Nissan's recommendation too).

Kind of off topic...but what are you guys using for postage for these oil analysis? I was thinking of putting a couple stamps on the black bottle they sent me...but would that be enough?

3750 for hard use per the manual?? Your UOA from Blackstone said you should go 6000miles next time.

Porsche using Mobil 1 here in Germany recommends 12000km/7500miles for an oil change on a Twin Turbo. That car makes much more heat and here can be driven fast/hard depending on the owner. Id stick with the 6000mi recommendation from your post on the oil nerds thread.

I will be changing Mobil-1 5/30 again this summer here and getting my first UOA and will post it. Beyond that its a minimum of 5000miles for me with synthetic, if not more. The oils just are much better now. No need to waste money at all. Or more time changing it/visiting the dealer.

Agreed 100%.

I run redline and change oil around 3k miles... i'd rather change oil way too early then even a little too late. It's not that big of an expense to warrant getting every last bit of life out of the oil.

If it's true that you can run redline 5k or even 7.5k miles safely then by all means; go for it. I'll stick to playing it safe and sticking to the owners manual. That way i can feel comfortable.

I run Mobil 1 Extended Performance in my truck that gets driven once or twice a week. and I have no problem going 10k miles between changes. but i dont care much about the truck like i do the Z.

I'm not trying to state facts, or change anyone's opinions, just stating mine. :)

I have been running redline and I change my oil at 7500 with plenty of additive left . I was running until 7500 and sent a oil sample to BlackStone .. They said everything looks great and run the oil til 10,000 miles .. If it looks good I will change every 10,000 .. I abuse my car daily ..

:iagree: The Z ain't just for looking at that's fo sho

Holy cow!! What type of filter were you using?

Redline is the best oil, period. I'm going to pick up 6 quarts of it today. 7,500 miles between changes is fine.

Update: Changed my oil yesterday. Not that we can really go by color...but I can definitely say it wasn't black...I would say...maybe a darker brown color lol.

Sending off my sample today to get tested. We'll see what they say about 6400 mile old oil!

How long does it usually take to get results?

Bosch oil filter ..

Looking foward to this!

That's all well and good, but it's meaningless. We are talking about Nissan.

I still change mine at 3750 for that reason, but then it is pretty hard to get them to pay for anything under warranty

HOLY shiettt. why 7000+? I dont see a reason to cheap out bro, be safe and change it at 3500.. maybe 4000 the most.

Glad you can read. The oils in general are better that before. A car creating high temps like a turbo 911 here in Germany would be breaking down the oil fairly quickly and still the interval for them is 7500miles. The oil they use is Mobil 1 and many 370Z owners here use it. I provided that as a comparison.

Also the Nissan dealers here use a 15000-kilometer service interval for the 370.
SO beyond that have a nice day! Thanks for letting me know I was in a Nissan forum. Fancy that!

Also the dealer here uses German Castrol 5-30 for the 370Z. Its known to be a good oil.

from what I have researched, the full synthetic ie. Mobile One can go the distance. I still don't like going over 5K with it. The ester oils are a good lubricant but are short lived and need to be replaced every 3 like conventional oil

It's nice to see someone like yourself on the forum who actually knows what they are talking about. Too many idiots in here with selective reading (knowledge gained in forums, sheesh) that wouldn't know the difference between a connecting rod and a push rod. But they now own a sports car and magically are smarter than all the engineers on the planet.

There is so much good information out there these days and its easily missed given the sheer volume of data and how rapidly it is disseminated.

Its like asking if you need anesthesia for a filling with some of the folks around cars forums. You just dont need to take the pain(cost/time of needless oil changes) when the tech readily exists to make your life sooooooooooooo much easier! :)

Sure thats rational for the non synth. The RedLine can go much further and we have posted UOA's here showing it.

Sending off tomorrow...should be a couple weeks before I get the report back.

:barf::argue::facepalm:

Yes. I can read just fine. You would have been better off with your point by sparing us with "Porsche this, VW that".

Oil analysis is the way to go for anyone wanting to push their oil further. Pretty obvious.

:iagree: Times have changed & a lot of things have gotten a lot better over time (oil, engines & etc......). As the first quote stated the gentlemen changed his oil at 7.5k miles & abused his car daily & the analysis came back to run the oil until 10k miles. Everyone have there on opinion on when they want to change their oil. If you want to change your oil every week go ahead & do so.

Earth shattering news. Spare you nothing. Funny you use the word us lol!

I never knew I had to clear my posts with you. Pathetic.

For folks like yourself who need that extra security, then keep getting your analysis. I have yet to have one in 40+ years of car ownership along with millions of others and never had an engine failure related to oil going 'bad'. Oh, btw, I did OA at one time way back when I was in the navy. OA has it's place - in industry, race car teams, military, etc. But for the everyday guy who doesn't track his car it's a waste of money to have them tell you that your good to the next oil change. Hmmm, come to think of it, it's pretty obvious the engineers have had this figured out for decades. How do you think they came up with those oil change schedules?

Hey guys! I got my lab report back today, (I'm not going to post the actual report because it has some of my info on it and I don't feel like blacking stuff out right now). If you want specifics, let me know.

This is for Redline full synthetic oil with the Purolator Pure 1 oil filter. I ran this oil and filter for 6,400 miles before changing. My car is a daily driver and hasn't been tracked.

Blackstone states that the universal averages for our engines are based on an oil run of 4,800 miles. I ran this oil for 6,400 and all wear averages read below the average. My TBN read 1.9 (a low reading would be 1), which means that my oil still had some active additives left. No moisture, coolant or fuel was found in my sample and the insolubles were excellent at 0.2% (which means that the Purolator filter is doing an excellent job; also the magnetic drain plug probably helped). Blackstone labs suggests running the oil to 7,500 miles next time and then do another test.

These are just my results and not everyone will be the same...but hopefully this gives everyone a pretty good idea at just how good this oil and filter combo is (and totally worth the money).

Thank you very much for listing your lab results.
I'll rep once I'm at a computer

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