Syntec and sludge?

[Triple_Se7en]

Slee

Bosch recommends 10K OCIs with their filters?

I've been using Castrol Syntec 5W-30 since 3K... now at 80K with 8K OCIs on the oil... 4K on the Fram filters.

No sludge.... looks hardly worn inside one valve cover. Your 10Ks on a wide viscosity range oil like 5W-50 with no filter changes between may be too much. Try 8K with 4K filter changes.

 

[Flimflam]

quote:

---

Originally posted by sgtgeek:
From my own observation of real world sludge issues (with others cars...as I have never had the issue)....one buddy of mine was religous in changing his dino oil every 3000 miles.....had sludge out the ying yang at about 25K on a new Toyota...he was just heartbroken.....when we talked he went on and on about following the recommended OCI...only used approved oils and viscosity etc. etc. As we talked I finally asked if it had been using oil...he couldn't answer AS HE HAD NOT BEEN EVEN CHECKING HIS OIL.....he never checked his oil in between 3K OCI's.....duh!!!

Thing had been running low on oil all this time we found out later......low oil/higher engine temps/oxidation=sludge......

---

I very rarely, if ever, look at my oil between oil changes. I used to, in my younger days. Then I realized it was a waste of time, because my oil level was always the same. Realize that I am talking *** cars, not domestic hunks of scrap iron.

Apart from the racetrack crowd, I do not know of anybody who can make *** cars consume oil.

 

[Kernel Potter]

quote:

---

So Kernel Potter has proof that Mobil-1 base oil with no cleaning additives shines engines better than Castrol base synthetic without any additives??

---

From reading the Noria site, the one comment they once made about real synthetic oil is it's biggest difference over regular base oils is it's ability to resist oxidation.

We've seen 3 Mad Ponchos go 18,000 miles with 5w-30 Mobil 1 in a LS1 Camaro. And we saw that going at least one thousand to 3,000 more miles may have not been unreasonable. Anyone care to do an 18,000 mile OCI with 5w-30 Castrol Syntec? I've done 16,000 mile OCIs with mobil 1 and there's no sight of varnish at all in the oil filler hole. Even Amsoil puts a 7,500 mile limit on Grp.III oils as compared to 3 times longer with their real synthetics.

I've also seen two posters on the net with reasonably taken care of cars and moderate oil intervals with a light varish in their engines with Castrol Syntec. You just don't see that with Mobil 1. Of course I realize it can depend on the given situation as we have seen spotless engines with lots of mile with < Group III oils used.

 

[slee]

Triple 7's,

Like I said,Syntec is a decent oil and in the future I will treat it as a good Dino.

All of my un-scientific "research" was based on what I have done in the past and is in no way meant to encourage anyone to push it to the limits as I have done.

Bosch recomends manufacturers OCI's, I'm quite sure,as does Castrol.

All I know is that when pushed beyond recommended
OCI's,in my "un-scientific" and "un-biased "obeservation,I had a lot of sludge build-up in the bottom of my filter.

I couldn't say as to what happened to the engine,as I don't do oil analysis.

Not intended as a flame against Castrol or your experience with it.If it works for you,PLEASE keep using it!!!!

Personally,I want the best "looking" oil and filter that I can get with the least hassle.

I am basing my opinion on what I was able to do on past experiences only!!!!!

(ie:no build-up in the bottom of filter)

PLEASE>>>>Don't think that I'm an expert or that
I followed Manufactures recommended OCI's.

I didn't follow them and am not an expert!!

Thank you and regards,

Slee

 

[cousincletus]

quote:

---

Originally posted by Flimflam:
I very rarely, if ever, look at my oil between oil changes. I used to, in my younger days. Then I realized it was a waste of time, because my oil level was always the same. Realize that I am talking *** cars, not domestic hunks of scrap iron.

Apart from the racetrack crowd, I do not know of anybody who can make *** cars consume oil. [/QB]

---

I have never had consumption problems with domestic cars. You're another one that has the delusion that anything imported is better.

 

[wavinwayne]

quote:

---

Originally posted by Flimflam:
...Apart from the racetrack crowd, I do not know of anybody who can make *** cars consume oil....

---

I wish my old '90 Mazda MX-6 would have known that.

That thing was an oiloholic. I tried several intervention methods & nothing worked. I finally divorced it.

I wonder how it would have liked GC?

 

[brianl703]

quote:

---

Originally posted by Flimflam:
Apart from the racetrack crowd, I do not know of anybody who can make *** cars consume oil.

---

Apparently, with ****subishi, which is a **** car if I'm not mistaken, all you have to do is drive it and the oil consumption soon becomes obvious due to the clouds appearing in the rear-view.

 

[Audi Junkie]

Thank you, TS.

quote:

---

I know that Syntec is Group III and not real synthetic oil

---

I am not sure we all know, with certianty, what componets any given oil is made of.

Again, this comes up, how do YOU define "synthetic"?

 

[TooSlick]

Yuk,

The sludge was due to degraded polymeric thickener, ie VI modifier. This is why it is desirable to minimize or eliminate these if possible. It's also why I'm not a fan of the very wide range - 0w-40/5w-50/10w-60 - synthetic lubricants.

TS

 

[bulwnkl]

{NOTE: This is a good-natured ribbing comment}

I'd like to introduce you to my Mitsubishi diesel pickup. It used oil at a similar rate as a 2-stroke dirt bike before I rebuilt it. Now it uses oil about half that fast. Methinks it needs a turbo.

 

[ediamiam]

quote:

---

Originally posted by Flimflam:

---

I'm sorry, I meant to say 'japanese cars,' but somehow, this site blocked out the abbreviation for 'japanese.' [/QUOTE]

Actually what you consider to be an abbreviation for japanese, is actually a slur. While frenchman is not a slur, china*** is a slur. Some sites are aware of it, others not.

 

[Flimflam]

quote:

---

Originally posted by brianl703:

quote:

---

Originally posted by Flimflam:
Apart from the racetrack crowd, I do not know of anybody who can make *** cars consume oil.

---

Apparently, with ****subishi, which is a **** car if I'm not mistaken, all you have to do is drive it and the oil consumption soon becomes obvious due to the clouds appearing in the rear-view.

---

I'm sorry, I meant to say 'japanese cars,' but somehow, this site blocked out the abbreviation for 'japanese.'

But I stand behind my claim, that I have never met/seen a japanese car that consumed or burned motor oil.