QR25DE and Mobil 1SS 0W-40

luvs2drive · Feb 1, 2005

Well, I went ahead and bought 5L of Mobil 1 SS 0W40 to give it a try. I got a really good price!

What would people in here expect me to experience over my 12,000km run. I'm hoping for a smoother running engine, maybe just a small loss of fuel efficeincy. My manual says the car can take 10W-40 above 0F (-18c)
I can't imagine that I'll be doing anything bad to the motor, but if I don't like it I'll be trying Mobil 1 SS 0w-30. I prefer the PAO and the moly found in the oil. My cars piston skirts and a few other parts are moly coated anyways.

luvs2drive · Feb 1, 2005

Thanks, but I did search and found no one using 0W40 SS. Looks like I'll be the first.

Most poeple use 30weight. Guess I'll have to post a UOA when I'm done.

JohnBrowning · Feb 1, 2005

It is no secrete I like 40 Wt. oils. I suspect that PAO and ester based 0W40's and 5W40 will be the best comprimise for most vechiles. I ran Redline 5W40 down to -18F and had no problems with cold flow or pumping etc....

I have M1 0W40 in my Garden Tractor and use it to plow snow. So far down to -15F and no problems either. We have seen a few UOA for 0W40 and all were good. Some were better then others but none were bad. Their is always a possability that your iron level will go up a bit but nothing major. According to Mobil it has really good cleaning abilitys.

haley10 · Feb 1, 2005

I doubt since M1 0W-40 is a starburst oil, that you will see any significant drop in fuel mileage. I would be surprised if you do. I think it will be beter for a 12K oci than the 30wts. A reason you might not like it depends on how cold it gets and if you have to make unaided cold starts at super extremes. It has good Long-Life specs.

Cyprs · Feb 2, 2005

I was told by one poster in here while back to be carefull with 40 weight in these Nissans. He said that if the engine gets sluggish then oil maybe to thick for clearances. He was refering to not using XD3 syn 0-40, I have heard the Mobil 0-40 is thinner base than XD3 0-40 which may be alright, the XD3 0-30 syn is a very heavy 30. Good luck.

Cyprs

Bror Jace · Feb 2, 2005

Hard to say what service 0W-40 will give you.

For a baseline, search this forum using the term "QR25DE"

--- Bror Jace

luvs2drive · Feb 3, 2005

quote:

Originally posted by Cyprs:
I was told by one poster in here while back to be carefull with 40 weight in these Nissans. He said that if the engine gets sluggish then oil maybe to thick for clearances. He was refering to not using XD3 syn 0-40, I have heard the Mobil 0-40 is thinner base than XD3 0-40 which may be alright, the XD3 0-30 syn is a very heavy 30. Good luck.

Cyprs

Yeah, I was wondering that myself...but I read this at the Mobil.ca website
Quoted....
"Mobil 1 with SuperSyn TM 0W-40 is formulated for newer European cars, especially those with advanced-technology, multi-valve engines. It can be used where an SAE 0W-40, 0W-30, 5W-30 or 5W-40 grade viscosity is recommended."

I guess I'll just pay attention to how the car behaves when I put the oil in. If I notice any serious issues with how the car runs...out she comes and back to 5W30 from then on.

Cyprs · Feb 3, 2005

Luvs2drive, I am going nuts with this QR25DE in this X-Trail on oil level. When I brought this X-Trail home I parked it on level ground. Checked oil, it was a half inch overfilled. I drained 250 mil and it still showed overfill but I left it.

Today I changed oil, the oil capacity is 4.1 litres due to the little filter, much smaller than Altima filter, this justifies 4.1 litres rather than 4.2 litres as in Altima.

I ran engine on Highway on good run, drained oil for 20 minutes, put on new filter and plug, dumped in 4 litres oil, run for 4 minutes, let side an hour, checked it, still overfill right up to the upper bend on dipstick, again about 3/8-1/2 inch overfill. Drained out another 250 mil and still bit overfill on check cold.

The Altima did not do this, I added 4.2 litres into that QR25DE with filter change, right on full mark perfect everytime.

I am inquiring on the number the dipstick is supposed to be, the number I have on this current dipstick is 6N200 , is that the same number on your QR25DE dipstick? Do you have 4.1 litre cap or 4.2 Litre and how does your oil level read?

Something is seriously wrong here, I am either overfilled due to capacity being wrong in manual or wrong dipstick.

In reguard to using 0-40 oil, my manual says one can use 10-40 dino from -18C up, syn 40 shouldn't be a problem if not too cold.

Cyprs

02RedSpec-V · Feb 3, 2005

Why put a w40 in the 2.5L? I to have read that w40 is too think for our cars and don't see any advantage to do so. Just use a thick 30 like GC or Esso XD3 0w30.

luvs2drive · Feb 3, 2005

quote:

Originally posted by 02RedSpec-V:
Why put a w40 in the 2.5L? I to have read that w40 is too think for our cars and don't see any advantage to do so. Just use a thick 30 like GC or Esso XD3 0w30.

I want a better long drain oil A3 with "Starburst" certification for my preference. GC 0W30 and XD-3 don't carry this certification. Mobil 1 SS OW40 does. From what I've read it thins out to a thick 30 pretty quickly and shouldn't raise back to a 40 by the time I'm done with it. I am just wondering what user can tell me what to expect with it's use. I've bought it...might as well try it!

luvs2drive · Feb 6, 2005

quote:

Originally posted by Cyprs:

I am inquiring on the number the dipstick is supposed to be, the number I have on this current dipstick is 6N200 , is that the same number on your QR25DE dipstick? Do you have 4.1 litre cap or 4.2 Litre and how does your oil level read?
Cyprs

Sorry about the delay. I'll get that info for ya.

luvs2drive · Feb 6, 2005

OK Cyprs..

Th number I have on the dip stick is 3Z000

The capacity with filter is 4.2L Strange that they should mention different for your motor.

wavinwayne · Feb 6, 2005

FWIW, I run M1 0w40 SS in my '00 VW GTI 1.8L Turbo, on a 5k mile DIY OCI schedule. I also use the M1 oil filter, part #M1-205. Since you were looking for opinions on this oil, I'll give you my vehicle's history:

I started using M1 0w40 SS at 36k miles. My VW is now on it's second fill of M1. The car now has 43k miles. I bought the car with 15k miles & don't have any idea how it was maintained before I bought it.

From 15k-21.5k, it had Castrol GTX 5w30 dino + an unknown oil filter, because I never looked. a big

on my part. From 21.5-28k, it had whatever oil the VW dealer put in for it's 20k service. + a VW OEM oil filter.

From 28k-36k miles, I had two oil changes done at WallyWorld. Both times, they used Super-Tech 5w30 & a Fram oil filter.

, but to their credit, they didn't mess anything up.

Now, for the good/bad/indifferent part (you decide) I could tell no difference whatsoever, regardless of what type of oil and/or filter was used in this car. I simply FEEL better knowing the M1 is in there. Sorry for my rambling.

D189379 · Feb 7, 2005

quote:

Originally posted by Cyprs:
Luvs2drive, I am going nuts with this QR25DE in this X-Trail on oil level. When I brought this X-Trail home I parked it on level ground. Checked oil, it was a half inch overfilled. I drained 250 mil and it still showed overfill but I left it.

Today I changed oil, the oil capacity is 4.1 litres due to the little filter, much smaller than Altima filter, this justifies 4.1 litres rather than 4.2 litres as in Altima.

I ran engine on Highway on good run, drained oil for 20 minutes, put on new filter and plug, dumped in 4 litres oil, run for 4 minutes, let side an hour, checked it, still overfill right up to the upper bend on dipstick, again about 3/8-1/2 inch overfill. Drained out another 250 mil and still bit overfill on check cold.

The Altima did not do this, I added 4.2 litres into that QR25DE with filter change, right on full mark perfect everytime.

I am inquiring on the number the dipstick is supposed to be, the number I have on this current dipstick is 6N200 , is that the same number on your QR25DE dipstick? Do you have 4.1 litre cap or 4.2 Litre and how does your oil level read?

Something is seriously wrong here, I am either overfilled due to capacity being wrong in manual or wrong dipstick.

In reguard to using 0-40 oil, my manual says one can use 10-40 dino from -18C up, syn 40 shouldn't be a problem if not too cold.

Cyprs

My 2.5 Nissan only holds 3.9 litres??

the_oil_dealer · Feb 7, 2005

you guys with QR25's gotta keep in mind that the rod to stroke ratio of those engines is really low!! The pistons get shoved right into the side of the cylinder bore, you might want a more viscous oil in those things.

Cyprs · Feb 7, 2005

I am now finding 3.9 to 4 litres right too. Here is what happened. I brought my X=Trail home, new 2005 model new to Canada, X-Trail used in Europe now few years.

I owned a 03 Altima, 4.2 litres worked perfect to full mark as said in manual. This QR25DE in X-Trail is different. When I brought home X-Trail, I parked level ground, waited about 2 hours and checked oil. It was overfilled right up to the U on dipstick, about 1/2" overfill. I drained 250 mil oil, this still left overfill of about 3/16" over full mark and I left it there luckily.

I then changed oil and filter at 700Kms, I put in 4 litres (manual calls for 4.1.) Again, overfilled to original factory U mark.

I call Nissan Dealership, they checked 5 other X-Trails on lot, all overfilled the same. They called Nissan Tech, Nissan Tech said to put in the 4 litres and where ever dipstick hits then that is it, if overfilled, then overfilled.

I drove that X-Tail 600 kms down about 300 mil, I think it will be okay. I now use my full mark of dipstick as my add mark, I keep down about 1/16" to 1/8" from the bottom of U on dipstick for my mark now, that is about 4 litre. Nissan Tech said your allowed no more than 500 mil overfill, I rather be 100 mil down.

Anyway, anyone buying an X-Trail, this post will save you grey hairs and draining oil needlessly.
I dont know why or how this happened in this X-TRail QR25DE.

Cyprs

QR25DE and Mobil 1SS 0W-40

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