Does anyone use Quaker State Full synthetic oil?

[stchman]

Umm, Quaker State is part of SOPUS, which also has Shell and Pennzoil Brands (among others)...Really?

The whole argument about sludging was from years ago when they used Pennsylvania crude almost exclusively. Pennsylvania crude has a very high paraffin wax content, both Pennzoil and Quaker State suffered sludging because of this; Pennzoil offset the issue with massive amounts of detergents IIRC. The wax issue has been remedied by a dewaxing process during the refining.

I would not hesitate to run any oil with "dexos" on the label as that is a pretty rigorous standard, and I want to remember it has a sludging component.

In my experience, an engine getting "sludged" up is a result of letting the oil go well past its change interval.

I have NEVER seen an engine that had the oil changed regularly get sludged up. I have seen MANY an engine sludged up when the person lets the oil stay in WELL past the interval. The person then blames the engine or the oil and then he/she tells their friends about it.

[Conlan Rose]

When I changed my oil pan gasket and rear main I cleaned the oil pan. I found about a 1/4" of sludge in one corner of the pan, but that's it and that is with 196,500 miles on the truck. There still was the factory crisscross hashing on the cylinder walls.

[CKNSLS]

I don't use Quaker State anymore due to sludge found on Oil Filler cap
in an old car, years ago. It was not synthetic, and was about 10 years ago.
It never caused problems, but I do know it was the only oil I used that did
this of : Pennzoil, Mobil One, Castrol. Now, I use many different cheap brands
for the other 4 cars I change the oil on. Our new Crew gets Bulk GM oil
at the Dealership evrey 3 months whether it needs it or not. Brian

This is the Internet. This is where people can get on forums and bash products that they used ten years ago that today are completely different. On auto/truck forums you see the bashers with Frahm Filters, Oil of alll different manufacturers, tires and especially Bosch spark plugs.

I have seen it all! My pet peeve is if you are going to bash a product, at least get up todate on WHAT IS SOLD TODAY!

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In my experience, an engine getting "sludged" up is a result of letting the oil go well past its change interval.

I have NEVER seen an engine that had the oil changed regularly get sludged up. I have seen MANY an engine sludged up when the person lets the oil stay in WELL past the interval. The person then blames the engine or the oil and then he/she tells their friends about it.

To be honest there were Toyota 6cylinder motors creating their own sludge in their mini-vans a few years ago, Toyota paid many dollars in claims and shotened the factory oil change interval.

[steved]

In my experience, an engine getting "sludged" up is a result of letting the oil go well past its change interval.

I have NEVER seen an engine that had the oil changed regularly get sludged up. I have seen MANY an engine sludged up when the person lets the oil stay in WELL past the interval. The person then blames the engine or the oil and then he/she tells their friends about it.

Obviously I'm speaking to a crowd that is way too young...my discussion predates the 70s, when the idea that Quaker State was a sludge-causing oil. And that has a lot of truth to it...I've tore engines down that had Quaker State ran in them (again, back in the day), and the valley would be completely loaded with sludge. You could tell what oil was run by the amount of sludge under the valley pan. A same engine, ran with another oil, would be completely clean.

My point is that modern oils are very good, and the argument that a certain oil makes more sludge than another is an old wives tail, unless the engine itself is a sludger.

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When I changed my oil pan gasket and rear main I cleaned the oil pan. I found about a 1/4" of sludge in one corner of the pan, but that's it and that is with 196,500 miles on the truck. There still was the factory crisscross hashing on the cylinder walls.

Although a different animal, I've seen diesels torn down with almost half a million miles on them that had no sludge in them. But diesel oils tend to have a lot more detergents than those meant for gasoline engines.

[Conlan Rose]

Although a different animal, I've seen diesels torn down with almost half a million miles on them that had no sludge in them. But diesel oils tend to have a lot more detergents than those meant for gasoline engines.

Also my truck was bought used and who knows what oils have been in it over time. Personally I use high quality non synthetic because I have a small leak in a cooler line that if synthetic was used would gush. As soon as that is fixed I will go for synthetic. I've since owning the truck have run both synthetic and dino oil and she seems to run the same pretty much, just a quieter start with synthetic.

[silverhobey]

This is the Internet. This is where people can get on forums and bash products that they used ten years ago that today are completely different. On auto/truck forums you see the bashers with Frahm Filters, Oil of alll different manufacturers, tires and especially Bosch spark plugs.

I have seen it all! My pet peeve is if you are going to bash a product, at least get up todate on WHAT IS SOLD TODAY!

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To be honest there were Toyota 6cylinder motors creating their own sludge in their mini-vans a few years ago, Toyota paid many dollars in claims and shotened the factory oil change interval.

not bashing products, just stating what happened as compared to others here with Quaker State
in the past. Unfortunately, I do know quite a few people in the same boat who do not
go on any forums/sites. All of my oil changes have, and continue to be a 3 - month
rotation whether they hit the mileage mark or not. Our vehicles never hit anywhere
near the mileage they tell you before an oil change is due.