Mobil 1 extended service oil

JARblue

I encourage you to send off samples of your oil after each change to Blackstone Labs. It only costs $25 and they'll even send you free materials to ship the oil. They will give you straight up facts about the quality of your oil and the amount of contaminants.

You said you've done two year OCIs in all your previous cars. I still question what makes you think that a two year interval is ok. It is very likely that your other car manufacturers recommend 6 month minimum OCI just like Nissan. I bet its not 2 years

Also, I read your logic for 1 year oil changes ... Go read the Bob The Oil Guy forums and you'll quickly realize it's far more complicated than your explanation. FWIW, I have seen manufacturer recommended 12,500mile/1year OCIs recommended on some vehicles in recent years, but they were not high performance sports cars.

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mishuko

the 335 recommended a 16000km interval on their manual...not a super high performance but nothing to baff at either. still way too much (10k mile) interval.

JARblue

BMW had actually recommended a 15,000 mile / 24 month interval before reducing it to every 10,000 miles / 12 months. I wonder why they changed it ...

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Darwins Child

I have to apologize for not being clear in an earlier post. I even re-quoted it without realizing it.
I thought that the last phrase with the word "continue" would make clear that I've always changed in our previous vehicles at a 1-year interval, but I guess I wasn't clear enough. I must admit that the phrase "as I have in all my vehicles of the past" could be understood to apply to the first part of the sentence. It does not.

So now I'll say that I've never changed any of our present or previous vehicles' oil at a two-year interval. In fact, for our year-round Outlander I have changed oil twice in one year when we have put on more than normal kms.

JARblue

I'm glad to hear that you are not doing 2 year oil changes. I change the oil on my Z 3-4 times a year based on mileage alone.

Also, my oil changes cost ~$30, so there's really no reason to try and extend the life of the oil. I just picked up 5 quarts of Mobil 1 at Walmart for $22.88 the weekend before last.

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Darwins Child

Do you change oil at less than 2,000 miles?

Again, I'm not trying to extend the life of the oil I buy. I only want to fully utilize the oil that I do buy, rather than pour unused oil into the eco-station's waste-oil tank.

My last comment on this thread will be after I pick up a Nissan oil filter, hopefully tomorrow, to report what the service manager has to say about the scenario I've already stated. I hope the thread is not locked until after I report what he says, because what he says may interest some owners whose vehicles are in a similar, short-summer-only, low-km situation to ours.

mishuko

by may 30th it'll be #3 for me LOL

to add to the above response, I will only have driven roughly 3k km or just under 2k miles since the last change. I did one before storage in November. did another one shortly after pulling storage in march. doing another one in may before my road trip. and another one once I'm back. do I care about the frequency? not really. oh and total mileage put on between then and now is less than 5000 KM.

SouthArk370Z

The best way to do that is with analysis. Short of that, all you can do is guess. If you don't do UOA, change often.

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JARblue

More like 5000 miles. I could increase it to 7500 miles or so because I do so much highway driving, but I drive the car pretty hard and prefer to err on the side of caution. Regardless of mileage, I would never go more than 6 months without an oil change.

Just consider the oil fully used once it's 6 months old regardless of mileage

You are referring to a Nissan dealer service manager? What makes you think he's going to say anything different than what Nissan recommends? Not to mention most dealer employees are idiots. If he says anything other than 6 month oil change intervals for summer only driving, then he's probably just another dealer idiot.

A used oil analysis is the only proper way to determine an appropriate oil change interval for your car.

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