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You do realize that the manual isn't based on full synthetic oil right?
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I do mine every 3k. If you want to extend it then thats you. There is a such thing as changing your oil late and hurting the engine. There isn't a such thing as changing too early and damaging your engine..
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joshs09slvrZ, Read your OM and decide under what conditions you drive your vehicle. You can go up to 7500 mile intervals as stated in the OM. I change my oil, Mobil 5W-30, once a year but I also store my car for the winter. My engine will last as long as anyone who changes their oil at 3750, 3700, 3000, 2500, 2000..........well you get my drift. If you track your car then you may want to consider changing your oil sooner. And don't waste your hard earned money getting an oil analysis. Millions upon millions of ordinary people drive gazillions of miles and never have an analysis done and their engines last over 100,000 miles. But if you want peace of mind and have money to burn, go for it. |
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I just read the OM maintenance guide and it says to change the oil every 3750 miles... So no, you're the one giving bad advice. I also love how you tell him oil analysis is worthless, your post and advice falls in that category. Hard earned money??? its 50 bucks you cant even take someone out to eat for that! |
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"Follow Periodic Maintenance Schedule 2 if none of driving conditions shown in Schedule 1 apply to the driving habits." Now, go read the conditions in schedule 1. Alot of Z owners do not fall under schedule 1 but there is so much internet hype on oil that people are changing their oil at 3750 miles when there is no need. |
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It's so interesting how this topic starts such a heavy controversy...there's always one guy who thinks he's better or smarter than the entire board and we should bow down to him. Thanks to the others for your input...I greatly appreciate it! |
I use redline oil as well and change mine every 3-4k miles.
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:iagree: Change it when it's dirty. Unless you're driving in a vacuum that'll be around 2500-4000 miles. Or 2 track days and some commuting.
More importantly, Don't put *-30wt oil in your cars, guys, and nothing that says SAE. M1 0W40. Royal Purple XPR 10w40. These oils have the protective additives your hi perf car needs and the right lubrication for the VQ system. SAE labeled oil is O2 sensor-safe corporate-approved generic stuff, the protective additives your car needs fouls their precious warrantied parts, and they've conspired against you. So, ignore the Nissan Corporate instructions like they ignored your need for a quality paint job, slave cylinder, fuel system, stereo, oil cooling, EXHAUST etc... Their Ester oil is super pure at the beginning which is great- for about 1K miles then it's like water because the Z34 oil pump shears the molecules. And the *-30wt stuff is for mom's Quest, not your Z. Now that we're back on topic, please discuss. |
:shakes head: Here we ago again. :ugh2:
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I'll be doing an oil change as soon as my Redline shipment arrives at my door.
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Example - The current model Porsche Turbo 911 uses Mobil 1 and the dealer doesnt want to see you until 7500miles that's12000 kilometers. New or used doesnt matter. Talk about heat generation in that machine! My VW dealer says 30,000 kilometers on my new GTI. Using the VW long life oil. I noticed they dont have a yard full of blown engines because of this either....Hmmmmmmm. In any case folks should do an oil analysis and see where their motor is to begin with and look long and hard at how you actually do drive. The 3000mile oil change is long dead. Not only that back in the 70's many cars had 6000mil oil changes in the manuals not 3000mi. That was on Dino oil, non synthetic. What was the old phrase about a sucker being born...... :hello: |
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I found this a few weeks ago and posted on the VW forum Im on. Oil has come a long long way. Worth a read for education whether you change early or not. Found this here on the 370 - Redline analysis for another member: http://www.the370z.com/members/linpa...bs-sample.html |
Do an Engine Oil Analysis. (EOA)
Blackstone Labs That will tell you what you need to know. Its not expensive and its a good way of tracking your engine's condition too. It will tell you if you can wait longer or need to do more frequent changes. Oil is a tricky thing hence why there is always so much discussion on it. Your driving habits, region, engine, and oil all have an effect on your oil's performance. For me I change my oil once per year. But I barely drive the Z 3000miles a year. And my EOA said I could have used the oil even longer. Also when looking at change intervals its not only engineering at work its management and making money factoring in. More people will buy an oil if it says 7500mile changes then one that says 3000. And good luck getting an oil company to replace your engine if it fails. Same goes with maintenance schedules is it better for you to come in and drop $100 every 3000miles or every 7500. And Nissan is on the hook for replacing your engine if it fails and they are doing the scheduled maintenance. |
+1 on getting an Oil Analysis if you are debating when to change your oil this much. It will tell you how much life is left in your oil if you changed it to early or how much life is not left if you waited too late. Then you will know based on your circumstances when the optimal time is to change your oil. Rule of thumb is to change it more often than not.
Now I want to know why none of you are changing your oil after driving around the block for optimal performance! :rolleyes: 2011 Nismo#91, What did your analysis show as far as percentage of contaminants in the oil after 3000 miles? I am guessing that driving such few miles it would be low. However for the guys storing their Z's for the winter after driving it all summer. I would recommend changing the oil prior to storage if you aren't already doing so. This will prevent potential contaminants from settling and causing harm to the engine. |
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