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Here's what it looks like. Getting pretty dark, I think my engine is just rough on oil and my stock airbox isn't really that freat at filtering out contaminants.

Been trying Amsoil signature 5W30 in my 2014 Xterra with the 4.0 VQ40DE V-6. How long would you say a extended OCI would be? manual has recommended 5k OCI's from Nissan long as I can remember. I'm running a K&N oil filter and I'm at 6k miles atm.

What type of harm? Its a open diff. No LSD. Petty sure they said GL4.. I could be wrong. Edit. They said it was a GL5 on the phone.

Took my 14 Nissan Xterra into a driveline shop today to have my rear diff inspected for a whine on the power side at 60mph. Everything checked out according to them, backlash, etc. Possibly the gearset is worn but the cost is prohibitive to rebuild. ( $2500. 00) vs finding one at a junkyard...

Can someone explain how a oil formulated for diesel engines works in a motorcycle designed for wet-clutch operation? I've always used Mobil 1 racing 4T, which is increasingly more expensive now. I've heard and read about Shell Rotella working in motorcycles?

Oil has a shelf life whether its been stored or sitting, oil tends to absorb moisture after awhile. I would dump and start fresh. For casual riding the old oil might be ok. But a fresh start would be ideal.

Looking at some oil for my 04 Honda CBR600RR, I usually use Mobil-1 10W40 4T, recently the priced was raised, so naturally Castrol racing 4T came to mind at $8 a quart vs 10+ for mobil-1 nowadays. Only difference I could find is Mobil1 is rated API SN+ whereas the Castrol is API SL which is a...

Not yet. This is what the claim for high milage is. Apparently high phosphorus Replacement Technology for emissions systems.

I was at Walmart cruising the oil section. I decided to buy Castrol EDGE 5W-30 high mileage because of the apparent extra wear packs. I have a 2014 Nissan Xterra with the VQ40DE with 80k miles. My OCIs are every 5k usually with mobil 1 filter. Just wondering if theres really any benefit to the...

This is my observation so purely subjective here.. I notice the engine seems to rev easier throughout the RPM band with less effort, is the best way to describe it. Just like you can tell when engine oil is getting near it's end of life vs new...

Prob for the best... I mean you have a Lexus.. ;)

???

I drank the Kool aid, bought Costco Kirkland 5W30 10 quarts for $24.00 bucks. Had great ratings API Syn Plus, Dexos. Not as smooth ( Rev's and Idle)as Mobil 1 EP... In my VQ40DE in my 2nd Gen.. Anyone else use this stuff? Maybe I should dump it lol. Who knows maybe it's all in my head..:unsure:

I just got off the phone with Castrol customer service. The rep stated they dont have any " recommended intervals" but suggested going off what the " manufacturer recommends". That has a me worried a bit, the ironic thing is their Edge line or extended performance has been tested to a higher...

Originally Posted by OilUzer forget the interval, GTX Magnatec 5W30 Noack is 8.9 latest 5W30 and 10W30 magnatec jugs says Full Synthetic Interval depends on conditions ... Average car, I would go 6-7K max and check the oil color & forget uoa The lower the Noack the better? Anything below...

Originally Posted by TheLawnRanger Full synthetic or synthetic blend? Full synthetic from Walmart, so its fresh stock. But the product is 3057 or the Green Bottle. https://www.walmart.com/ip/Castrol-...Pw57Cde_AMsWj4t9YV5bPVr9TKRoCHMEQAvD_BwE

Found this: https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3940342/2 A bunch of people doing UOA claim 9k..

Found this: https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3940342/2 This cobalt owner says 9k?

2014 Nissan Xterra with the VQ40 DE 4.0 engine. I'm in the Pacific Northwest, driving habits are driving around town, stop and go traffic, occasional offroading. I picked it up for $ 19/5 Quarts.. My engine seems to love this stuff. So smooth. I looked in the Castrol datasheet, no mention of...

What is the suspected interval length for this oil? I'm using 5W30 and can't seem to find any official source, except for Malaysia. Not the U.S. Market, sources indicate 5k-10 miles.