Mobil 1 extended service oil

Originally Posted by Darwins Child

Thanks for the advice.

Although I think that changing oil every two years with the extended-service oil would be fine, as I have in all my vehicles of the past, I'll continue to be overcautious and change oil once per year. For our summer-only Z, this will be at the end of the last ride of the driving season with regular-service Mobil 1.

Thanks again.

Originally Posted by Darwins Child

You know, I wasn't sure what Nissan's official "regular service" interval was, so last night I checked the maintenance manual in the glove box and, sure enough, 8K km (5K miles), or 6 months, whichever comes first.

For a summer-only, low-km vehicle, this is patently ridiculous for some very good reasons.

In Edmonton the winter's are normally at least 6 months long, and for summer-only Z drivers this means that the vehicle will not be operated for 6 months or more.

With the above in mind, let's say the owner attempts to not exceed the Nissan-mandated 6-month oil-change interval. So the owner changes the oil in say mid April and, in our case, after driving 3K km or so, 6 months later in mid October. Sounds very reasonable, right?

But what happens next April, after the car has been sitting all 6 months of winter? Just to satisfy Nissan's requirement, am I actually supposed to go out to buy (and get a dated receipt for) a new filter and new oil, then drain the "old" new oil out of the vehicle, trash the "old" new oil filter, then screw on the new new oil filter and pour in some more new new oil?

Again, for summer-only Z drivers, and there must be millions of them, Nissan's requirement is ridiculous and should be fought. IMO, the oil change requirements for mileage might remain the same, but the time interval must be changed to 1 year. That is, 8K km (5K miles) or 12 months, whichever comes first.

I'll be heading to the local Nissan dealer to buy an oil filter in the next day or two. I'll discuss the matter with the service manager and report back what he has to say. I can't believe that he's going to stand there with a straight face and tell me that it is necessary for Edmonton's summer-only, low-km Z owners to go through that ridiculous, wasteful procedure.

Originally Posted by Darwins Child

... If contamination of the new oil during the winter in which the car is not operated is of concern, one could in the fall drain the old oil for a few days, remove the old filter and install the new filter and plug Then just wait until the beginning of the driving season to remove the plug to drain any old oil that slowly dripped down over the months, reinstall the plug and pour in the new oil.

Originally Posted by Darwins Child

Thanks for the advice.

Although I think that changing oil every two years with the extended-service oil would be fine, as I have in all my vehicles of the past, I'll continue to be overcautious and change oil once per year. For our summer-only Z, this will be at the end of the last ride of the driving season with regular-service Mobil 1.

Thanks again.

Originally Posted by Darwins Child

I think some commenters need an update for our 3K km per driving season Z.

I hate quoting myself, but I already conceded defeat on the two-year interval in my post #13 earlier in this thread:

Originally Posted by 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.

Originally Posted by 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.

Originally Posted by JARblue

.............
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.

Originally Posted by Darwins Child

..........
Although I think that changing oil every two years with the extended-service oil would be fine, as I have in all my vehicles of the past, I'll continue to be overcautious and change oil once per year. For our summer-only Z, this will be at the end of the last ride of the driving season with regular-service Mobil 1.
............

Originally Posted by 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.

Originally Posted by 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.

Originally Posted by 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.

Originally Posted by 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.

Originally Posted by Darwins Child

... 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. ...