OCI brand changes

[buck91]

Been running QSUD in the 5.0L in sig for two OCI now (about 8,500 miles each without pushing the IOLM to zero) and after watching oil color and reading others opinions I am thinking about switching to M1 for the next OCI to make up for any lack of cleaning the QSUD might have. I still have one OCI worth of the QSUD in storage; is there any reason switching back and forth would be a bad idea? In the future I don't really have a plan, though I have used MC blend happily, can get M1 at Costco/Sams or watch for the various top line synthetics to go on sale. I am hoping to take this truck to 200k without suffering any engine issues so I want to cover wear as well as deposit issues, particularly with the cam phasers and oil control rings.

 

[aquariuscsm]

Switching won't hurt a thing. I try different brands all the time out of boredom :^)

 

[raytseng]

use up the older oil first. otherwise you'll never make it back to the QSUD you have in storage

 

[barkingspider]

Change and have fun with it

 

[Bud_One]

Since when does QSUD lack cleaning ability ?

 

[zach1900]

I swear people here would rather be able to eat of the inside of their engines than have an oil that actually lubricates well, you know, it's main function.

 

[crazyoildude]

Pennzoil platinum cleans better than the QSUD i saw that first hand on my Moms Mercury grand marquis .. I wrote about it a little while back

 

[HTSS_TR]

My LS400 never had more than 2 OCI'S with same brand and/or type(dino&syn), the car has more than 370k miles on odometer now without any engine problem, even the valve cover gaskets are original without leak.

 

[buck91]

Originally Posted By: Bud_One
Since when does QSUD lack cleaning ability ?


Well, I know engine oil color does not indicate when it needs changing, but it certainly MUST indicate the amount of dissolved solids held in suspension. QSUD does not begin to even look dirty until well towards then end of a OCI in my truck (usually 6-7k miles I'll notice a change). In another, high mileage engine I have run it for a while with the same lack of dirtiness noted.

Is this scientific, absolutely not. But unless somebody can provide an alternate explanation then I will assume this means the QSUD does not clean as well as other oils. Example is MC blend in the truck turned "dirty" looking very quickly. As did HDEO in the car higher mileage engine.

And as mentioned initially, cleanliness is a priority for me simply in that I do not want to deal with high mileage problems with varnish/coke/carbon/etc in the piston rings and cam phasers. Honestly, though I would love to see evidence of QSUD providing better cleaning than it seems to me.

 

[crazyoildude]

What year and engine in that lexus

 

[zach1900]

Originally Posted By: buck91
Originally Posted By: Bud_One
Since when does QSUD lack cleaning ability ?


Well, I know engine oil color does not indicate when it needs changing, but it certainly MUST indicate the amount of dissolved solids held in suspension. QSUD does not begin to even look dirty until well towards then end of a OCI in my truck (usually 6-7k miles I'll notice a change). In another, high mileage engine I have run it for a while with the same lack of dirtiness noted.

Is this scientific, absolutely not. But unless somebody can provide an alternate explanation then I will assume this means the QSUD does not clean as well as other oils. Example is MC blend in the truck turned "dirty" looking very quickly. As did HDEO in the car higher mileage engine.

And as mentioned initially, cleanliness is a priority for me simply in that I do not want to deal with high mileage problems with varnish/coke/carbon/etc in the piston rings and cam phasers. Honestly, though I would love to see evidence of QSUD providing better cleaning than it seems to me.
engine oil darkens with heat.

 

[zach1900]

My Camry doesn't darken any oil, from super tech to Penn.Ultra, 4,000 to 7,000 mile oci, the valve train is still clean as a whistle, in my case I take that to mean I have little to no blow-by. My Dakota on the other hand darkens all oil in 1,000 miles, neither vehicle have any appreciable oil loss through entire oci's of 4,000-7,000 miles.

 

[zach1900]

LS400= 4.0 V8.

 

[Revving2Redline]

Use up the qsud or add a qt of pennzoil platinum or ultra to give you a higher cleaning. I think qsud is a good syn and if everyone used a syn from the get go by the time you worried about clean internal issues 200k would already be in front of you. Bottom line..It might be the best budget syn that even has dexos and hto6 specs in its oil. You might stay with it and run a occassional pennzoil syn through it.

 

[901Memphis]

Engine oil color is a useless indicator.

That being said the Mobil 1 is certainly positioned in a higher tier than QSUD. Mobil 1 being a premium OTC synthetic and QSUD being an excellent bang for your buck entry level synthetic.

 

[Clevy]

Originally Posted By: Bud_One
Since when does QSUD lack cleaning ability ?



That was my question too.


Originally Posted By: buck91
Originally Posted By: Bud_One
Since when does QSUD lack cleaning ability ?


Well, I know engine oil color does not indicate when it needs changing, but it certainly MUST indicate the amount of dissolved solids held in suspension. QSUD does not begin to even look dirty until well towards then end of a OCI in my truck (usually 6-7k miles I'll notice a change). In another, high mileage engine I have run it for a while with the same lack of dirtiness noted.

Is this scientific, absolutely not. But unless somebody can provide an alternate explanation then I will assume this means the QSUD does not clean as well as other oils. Example is MC blend in the truck turned "dirty" looking very quickly. As did HDEO in the car higher mileage engine.

And as mentioned initially, cleanliness is a priority for me simply in that I do not want to deal with high mileage problems with varnish/coke/carbon/etc in the piston rings and cam phasers. Honestly, though I would love to see evidence of QSUD providing better cleaning than it seems to me.



Your running shorter intervals than the oil life monitor says so the oil isn't depleted so deposits won't exist.
Oil colour is not an accurate measure of anything. Dissolved solids eventually agglomerate to the point where the filter will catch them.
Diesels turn the oil mud black in minutes yet extended intervals are nary an issue.
Your trying to fix a problem that doesn't exists.
If you want to try different brands by all means go ahead. But don't fool yourself into believing your solving any problems.

 

[camperbob]

Originally Posted By: zach1900
My Camry doesn't darken any oil, from super tech to Penn.Ultra, 4,000 to 7,000 mile oci, the valve train is still clean as a whistle, in my case I take that to mean I have little to no blow-by. My Dakota on the other hand darkens all oil in 1,000 miles, neither vehicle have any appreciable oil loss through entire oci's of 4,000-7,000 miles.


My Jeep does the same thing...immediate dark

 

[Yup]

Originally Posted By: zach1900
My Camry doesn't darken any oil, from super tech to Penn.Ultra, 4,000 to 7,000 mile oci, the valve train is still clean as a whistle, in my case I take that to mean I have little to no blow-by. My Dakota on the other hand darkens all oil in 1,000 miles, neither vehicle have any appreciable oil loss through entire oci's of 4,000-7,000 miles.


Same thing with my Civic SI (in regard to your Camry). The only thing I've noted is that 0W oils need refills about every 1,000-2,000 miles if I've been driving down the interstate at 80 for extended periods with a 4K RPM level. Mobil 1, QSUD, PP, PU, Havoline conventional, etc. all look clean for basically 4K. About a month ago change oil with 5,800 miles that was used during the winter (cold winters in MN with some idling) and the oil was still somewhat golden and transparent. Doesn't matter the brand.