Full synthetic is substantially more expensive at Jiffy Lube and Valvoline quick change (forgot exact title). My car (Kia) requires 6 month (severe schedule) OCIs to maintain warranty. I usually drive less than 1000 miles in 6 months.I wouldn't say they use especially low quality oil. However, if you have a vehicle of the last fifteen years or so with no leaks, why not use a synthetic? The off the shelf market (Walmart, auto parts store) has moved to primarily synthetic.
Valvoline Instant Oil Change is the name of the outfit.Full synthetic is substantially more expensive at Jiffy Lube and Valvoline quick change (forgot exact title). My car (Kia) requires 6 month (severe schedule) OCIs to maintain warranty. I usually drive less than 1000 miles in 6 months.
As an aside, if you look into the owners manual, the vast majority of people use their vehicles according to the "severe" schedule.
Are there oils claiming to be multi-weight but are really straight weight?
Claim how?Are there oils claiming to be multi-weight but are really straight weight?
No jiffy lube and valvoline don’t use low quality oil. It’s hard to even call bulk low quality oil, if it’s purchased by service stations and dealerships it will have to meet current specs maybe it’s not a 10k oil but that doesn’t mean it’s low quality.What are examples of low quality oil?
Is what they use in Jiffy Lube and Valvoline oil change places examples of low quality oil? At Jiffy Lube I've used semi-synthetic. At Valvoline I had them put in conventional oil the only time I bought my car there.
I think he's asking if there are blenders displaying a multigrade designation on the bottle with contents that are actually a straight grade.Claim how?
Correct.I think he's asking if there are blenders displaying a multigrade designation on the bottle with contents that are actually a straight grade.
That’s permitted (but not required) under the SAE labeling rules if the monograde oil meets the winter rating requirements for the labeling. The reverse is not permitted. An oil with any VII cannot be labeled as a monograde.I think he's asking if there are blenders displaying a multigrade designation on the bottle with contents that are actually a straight grade.
The company I worked for had us get the vans serviced at Valvoline quick change which didn`t cause any engine problems but teach us to not bring our POV`s there. So the oils quality isn`t suspect just the experience.
Same here with company cars.I’ve driven leased vehicles for work for many years and used Jiffy Lube, Kwik Kar, VIOC, Firestone, Goodyear, Take 5, etc. many times. Zero engine problems.
Why would you suspect **** oil? By what basis?Its surprising to me how cheap Walmart is for their most barebones oil change. About $30 OTD for the bottom of the barrel. That's their "pit crew" oil change. Suspect you get a fill of **** oil and a filter, but that's certainly better than nothing. No clue what they use.
I think the recycled oil that valvoline or one of the big companies had a few years back was tested and considered not good. Walmart sold (still sells?) I can't remember the brand but an SA rated oil that shouldn't go in anything remotely modern.I read "low quality" oil is a possible culprit for oil caused engine problems. I thought all oil here in the U.S. had to measure up to a specification.
What are examples of low quality oil?
Is what they use in Jiffy Lube and Valvoline oil change places examples of low quality oil? At Jiffy Lube I've used semi-synthetic. At Valvoline I had them put in conventional oil the only time I bought my car there.
You would have to test every batch from each company in order to determine this. If an oil blender provided one oil for certification but offered an inferior product for distribution, how would you ever know?I kinda feel like the real question isn't whether there are janky uncertified oils being sold in gas stations, bodegas, and dollar stores, and whether they're any good, but rather whether there are low quality certified oils out there.
Like for example, that Reladyne/DuraMax stuff mentioned upthread. I'd never heard of it until I got the oil changed in my old Dodge Dakota and that's what they had. It's SN+ rated, so ostensibly it should be good enough.
I think the question I was getting at was more that "is just the standard and nothing more" considered low quality or not?You would have to test every batch from each company in order to determine this. If an oil blender provided one oil for certification but offered an inferior product for distribution, how would you ever know?