06 MazdaSpeed 6 Quaker Q Advanced 5W-30 4300 miles

[Scott P]

I took advantage of O'Rielly's Free After Rebate deal a few months back on Quaker State Q Advanced. This is my second oil change on this motor (car bought used) and I'm trying to nail down an OCI.

The car was driven a good mix of highway and city. Highway runs usually were in the 3,000 rpm range. The engine is a 2.4L DISI Turbo. I did use Lube Control every 1,000 miles or so. Filter was a Mazda OEM unit.

I do like the lower wear numbers. I'm pleasantly surprised at how well the oil held up. The previous oil was Mazda Dealer fill from an oil change. I'm currently using Mobil 1 5W-30 SL that's the last of my stash from Pep Boys.

Any thoughts or questions on this report?

 

[badtlc]

that is the first DISI UOA I have seen with reasonable wear numbers, comparatively speaking. I'm anxious to see the next one.

 

[Scott P]

I was putting about 50 miles per day on the car for a couple months. The driving was anything from 80 mph cruising to 15 mph bumper to bumper and stop and go traffic. It's typical Houston traffic. I think the cruising helped with the wear number.

Right now, I'm back to suburban driving and not much open road cruising. The next report should be interesting.

 

[Scott P]

Anyone else have thoughts? I'm curious to see if I'm safe to run upwards of 5,000-6,000 miles for an interval.

 

[TR3-2001SE]

Excellent wear numbers but the oil really thinned out. Insolubles a little high for interval. Low flash point. I am thinking you will see better results with the M1 but you need to get the fuel dilution fixed. It is what lowered the flash point and viscosity. I think a better choice with the turbo would be mobil 1 0w-40.

 

[MCompact]

I just sent off a sample of M1 5W-30 that I ran in my Mazdaspeed3 for a bit over 5K; I can't believe that some folks are going 7.5K on conventional oil...

 

[Scott P]

Originally Posted By: TR3-2001SE
Excellent wear numbers but the oil really thinned out. Insolubles a little high for interval. Low flash point. I am thinking you will see better results with the M1 but you need to get the fuel dilution fixed. It is what lowered the flash point and viscosity. I think a better choice with the turbo would be mobil 1 0w-40.


I don't know if the fuel dilution is something that can be "fixed". It seems to be a side effect/result of the DISI design of this motor. I haven't seen any UOA's on this motor that didn't have fuel dilution of some sort.

 

[Nederlander75]

I just installed GC. Burning off my stash of this before going to Ams.

I was told early on with my Evo that using a 10w would reduce fuel dilution by improving ring seal at start up and it worked, but its not a DISI. For what thats worth.

 

[Scott P]

I have some M1 10W-30 SL, but for some reason, I thought I read that it was thinner than 5W-30.

 

[Nederlander75]

At startup it should be thicker, but operating I think I heard the same that its thinner.

 

[Scott P]

I have 12 qts of 5W-30 PP and several quarts of M1 10W-30 (SL) left, so it might be a while before I try new oil.