dynomax Posted January 25, 2013 Share Posted January 25, 2013 (edited) Now, oil changes are something i am pretty faithful with, and common to these pathfinder vq35's, after about 5000k on my oil change it starts to take a bit.. i run mobil 1 synthetic, and push it to 10,000kms... i was a bit over my 10k as I had my wifes car in the garage waiting for a new caliper... and i was a about 10500... the engine developed a slight knocking sound... so i checked the oil thinking the worst, and it was slightly above the low mark... say 1/5 up from low before the high mark. i topped the oil right up, and it seemed to still do it a bit at cold start, then stop... i quit driving it basically so i finally got the wifes car out and got the truck in for an oil change, and immediatly the knock went away even on cold starts, and has not even hinted at making this knock ever since, ever at our recent stretch of -20 deg C... do these pathfinders like fresh oil? not like synethic? did i push the change too far? friend of mine (mechanic) said it was possible it got a bit low oil pressure, and retarded timing... (no eng or oil light ever came on -- and yes it works at key on) any explanation on this??? or experience on the same thing? Guess I got a little scared in to either switching to 5000km changes, or switching back to dino oil... i have also been running 91 octane with no ethanol. i did put mobil 1 synthetic 520 back in. Edited January 25, 2013 by dynomax Link to comment Share on other sites More sharing options...
Towncivilian Posted January 25, 2013 Share Posted January 25, 2013 What oil filter are you using? Knocking sounds can be caused by certain oil filters. You're putting 5W-20 in a VQ? Too thin at operating temperature, our engines shear oil quite a bit. Get 5W-30 or 0W-30 in there. Link to comment Share on other sites More sharing options...
Tungsten Posted January 25, 2013 Share Posted January 25, 2013 I don't see anything wrong with that oil change interval. I would change it a little sooner but that should not cause any knocking. Maybe a power valve screw fell in? Link to comment Share on other sites More sharing options...
Towncivilian Posted January 25, 2013 Share Posted January 25, 2013 Yes, 10k km = 6213 miles, easily attainable using Mobil 1. There is nothing wrong with your oil change interval. Like I said, oil filter and viscosity (if you're really using 5W-20) are probable causes of your increased noise. It wouldn't hurt to check your power valve screws and apply red threadlocker to them too. Link to comment Share on other sites More sharing options...
dynomax Posted January 25, 2013 Author Share Posted January 25, 2013 What oil filter are you using? Knocking sounds can be caused by certain oil filters. You're putting 5W-20 in a VQ? Too thin at operating temperature, our engines shear oil quite a bit. Get 5W-30 or 0W-30 in there. I am sorry, did two back to back oil changes, 520 is in the honda... i put 530 as specified... I use WIX filters... they have always been black, but the latest one i got was white, not sure why? Link to comment Share on other sites More sharing options...
dynomax Posted January 25, 2013 Author Share Posted January 25, 2013 Yes, 10k km = 6213 miles, easily attainable using Mobil 1. There is nothing wrong with your oil change interval. Like I said, oil filter and viscosity (if you're really using 5W-20) are probable causes of your increased noise. It wouldn't hurt to check your power valve screws and apply red threadlocker to them too. Ok, I am going to check that, I have read the detailed post and pictures on it. Don't get me wrong, I am not getting down on this engine at all... i can see it carrying me well to 250-300,000kms Link to comment Share on other sites More sharing options...
Towncivilian Posted January 25, 2013 Share Posted January 25, 2013 Do you use the Wix 1536 filter? Link to comment Share on other sites More sharing options...
adamzan Posted January 25, 2013 Share Posted January 25, 2013 I am not a fan of wix filters, even though I know they have a great reputation. I used one (napa gold) on my wd21, and for that entire oil change interval the oil pressure took noticably longer to come up and the lifters ticked on nearly every startup. Changed it with another filter (don't remember the brand) and it was fine again. Same oil used both times. Link to comment Share on other sites More sharing options...
dynomax Posted January 25, 2013 Author Share Posted January 25, 2013 Do you use the Wix 1536 filter? yes, thats right. oddly enough, same filter as my wifes 04 accord! Link to comment Share on other sites More sharing options...
Towncivilian Posted January 25, 2013 Share Posted January 25, 2013 Yeah, Nissan and Hondas share filters generally. If you can, try a different brand filter. Purolator or Bosch filters are great quality. Link to comment Share on other sites More sharing options...
devonianwalk Posted January 25, 2013 Share Posted January 25, 2013 You guys talked me into the Bosch filters a while back. I recall having engine tick on start up for years. Since I've changed filters, the tick has stopped. Link to comment Share on other sites More sharing options...
Tungsten Posted January 27, 2013 Share Posted January 27, 2013 The anti drain back valve design is different across filters. Some are better and some are worse. The BOSCH ones seems to be pretty good. Link to comment Share on other sites More sharing options...
dynomax Posted January 28, 2013 Author Share Posted January 28, 2013 The anti drain back valve design is different across filters. Some are better and some are worse. The BOSCH ones seems to be pretty good. I searched around a bit for bosch filters, haven't found them yet. I can definatly get the napa gold... do you guys buy them online or what? I always thought WIX made a good filter though! Anyway, I'm gonna be a little more careful on er, that knock worried me a bit, but man this engine still runs real nice... i am not in love with my pathfinder, but every time I get in it I can't get over how tight, and well built nissans are after driving domestic trucks at work. I have a Honda car same year, and I would say the nissan is as good or better than the honda fit and finish wise and maintenance wise. Nothing like any domestic i've had thats 10 years old. Link to comment Share on other sites More sharing options...
Towncivilian Posted January 28, 2013 Share Posted January 28, 2013 Napa Gold is identical to Wix. Bosch Premium filters are identical to Purolator PureONE filters. 1 Link to comment Share on other sites More sharing options...
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