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Thanks. I'm personally not minding topping it off with a 1qt every 500-700. In fact, I'm pretty shocked to realize I've had it for 51,000 miles doing this. Glad it keeps on running. I'm hopeful there is an easy fix to try, but I have read quite of bit of other owner's having this problem and...

Just an update. I have been running Valvoline MaxLife Blended High Mileage 5w30 (red bottle) for the last 2.5 years and no change. I've just been dealing with it. Truck has 176k on it now and burns 1qt every 500-700 miles (must be dependant on driving). Other than this, the truck has been...

Quick question. I'm going to be changing my oil this weekend and will be officially switching off of the Mobil 1. Due to the info I've received, I'm going to decide between Valvoline MaxLife and SuperTech. Due to extremes between Summer and Winter in Denver, CO. I'm not sure if I should run...

It is confirmed, oil was changed with 10w30 Mobil 1 High Mileage at 151,408 and now at 152,406 I'm a little 1.25 quarts low (the .25 may be a result of me not putting the .25 needed of a 5.25 oil change). I topped it up with some leftover 5w30 Mobil 1 High Mileage I had. I'm still at a loss...

Never thought of straying from Mobil 1 until recently. So the cheap WalMart SuperTech with 3000 mile oil changes is good enough? Wow, I feel like I've been throwing money away all this time. Still need to see how the truck runs after this 10w30 Mobil 1 High Mileage change.

I've always heard great things about Mobile 1 and it's probably the only reason I've stuck with it. I have not heard anything about Valvoline MaxLife 5w30; is there something unique about that oil that will help over the Mobile 1 I'm currently using? I will give it a try next change. I will...

The PCV vale was pain to get to. I had to remove the upper intake manifold which requires a replacement gasket! :-/ . any additives that could help? Any recommended oil viscosity? My truck's manual recommends 5w30. Thank you

I changed the PCV valve and spark plugs last year and don't recall anything that jumped out at me. I will run the fuel cleaners and report back. If I were to switch to conventional, is it reasonable to expect any improvement on consumption? Not sure if anyone has any positive results just by...

I've actually been dealing with this problem since I bought the truck in 2014 at 125k. I should have known better when the car was 1 quart low during the test drive. Anyway, I was unsure of the history of the truck and consistently have been using 5w30 High Mileage Mobile 1 since I bought it...

Bump! Finally getting around to working on this truck as it's been parked for quite some time. Giving it a complete tune-up and trying to diagnose the loud rattle at startup. Popped off a timing chain cover today and look at all the sludge! Should I continue with the Mobil 1 5w30 High...

Originally Posted By: kschachn What again is the non-mechanical problem the OP is having? I keep forgetting, or was there even one we know about? Originally Posted By: demarpaint I'd use a pint of MMO for the last 1,000 miles of your current OCI, don't worry about being 1/2 a qt over. Then do...

Originally Posted By: Trav You might find this interesting. I have the FSM for this engine on DVD if you need anything. http://www.nissanclub.com/forums/2002-20...ming-chain.html Also, considering tackling this myself (not a mechanic, but have done a lot of work... usually takes me 10x as...

Originally Posted By: Trav You might find this interesting. I have the FSM for this engine on DVD if you need anything. http://www.nissanclub.com/forums/2002-20...ming-chain.html Trav, i spent a few more hours tonight reading up on my exact problem and you hit it right on the nose. Thank...

Thank you for the in depth reply. If I recall correctly, I did read an article/post on the timing guide being a possible cause for the noise. Perhaps I'll just stick with my current regimen and investigate this issue. On a side note, you recommended Mobil 1 0w40 viscosity; why not stick with the...

How about running the MMO with the 5w30 Mobil 1 High Mileage Full Synthetic? Would it be wise to switch to conventional during this cleaning?

I like the idea of running it for a little bit of time. Even if it's more "mental", I'll feel better knowing I'm trying something to clean-up my engine a little. I also ready online that using the Mobil 1 High Mileage Oil every 3000 will accomplish the same thing as the detergents in the oil...

Last year I purchased a 2001 Infiniti QX4 (engine: V6 VQ35DE) with 125,000 miles. I believe the engine was not properly taken care of regularly and would like to clean it safely the best I can. I changed the oil from whatever was in there to Mobil 1 High Mileage 5W-30 FULL Synthetic with FRAM...

I recently purchased a 2001 Infiniti QX4 with 124,000 miles in July from a used car dealership. The car manual recommends 5w30. At the time, I thought it would be best to switch it to synthetic (mainly because I do not know the history of the car and I hear this oil is better?) high mileage oil...

I'm pretty sure it's the cheap Purolator. I will try swapping out filter's first to see if it goes away. If it doesn't, what oil change interval do you guys recommend? Right now I'm sitting at about 1200 miles since I first changed it. I have no problem spending a little money to "cleanse" this...

Hello, I appreciate any advice with this problem I've been having. I purchased a 2001 Infiniti QX4 (same engine as a 2001 Nissan Pathfinder) on 07/05/2014 from a local used car dealership. At the time of purchase, I noticed the vehicle had a loud start. I checked the oil and found it was about...