I haven't looked at too many places yet, but I have seen no more conventional oil for sale, anywhere. The closest thing to it is a "blend", which I guess is conventional oil with some synthetic oil added.

I don't want to change over from conventional to synthetic due to leak fears, and also due to fearing that sludge deposits will be loosened up and allowed to float around, clogging up stuff.

I was happy with Walmart Supertech 10w 30, now it is nowhere to be found, just some "all mileage" blended stuff.

 

It's available at Walmart and all major auto parts stores...

 

Blend can mean 99% conventional, 1% synthetic. I've never had a leak problem with any of the High Mileage blends (I have had problems with full synth in old cars).

 

check a different walmart,. that's what I had to do.

 

Castrol GTX is not blended oil. I have used for 21 years in my sold 1972 Buick GS, now in my '84 Trans AM.

 

Thanks, guys. I'll keep looking.

 

You can get it anywhere.




https://www.oreillyauto.com/detail/c.../20505qt?pos=3



https://www.autozone.com/motor-oil-a...E&gclsrc=aw.ds

 

Except 20w50 is too damn thick...

 

Used as a example

 

Just Went To Two Different Walmart's And All They Had Was Either Full Synthetic Or Synthetic Blend The Only Brand Conventional Oil Was Quaker State But Of Course 10W-30 Was Sold Out

 

I'm in eastern Pa. Walmart by me has zero conventional oil, not even an empty slot for it. I went to a wALMART sUPERCENTER 10 MILES AWAY. tHEY WOULDN'T ANSWER THE PHONE, SO i HAD TO DRIVE OUT. tHEY DID HAVE A SHELF SPOT FOR sUPER tECH CONVENTIONAL (EMPTY OF COURSE) FOE $3.09 (UP FROM $2.39).

Sorry for caps. Back to normal now. I did eventually find a local noname aupo parts place that had noname conventional oil for $2.99 a quart. They tried to gouge me for $3.99 a quart at the register, but I told them the sign said $2.99, so I got it at $2.99 a quart. Got some 5w30 for my daily driver and some 10w30 for my GTA.

 

No Walmart's my way have conventional oil anymore. You have to go to an auto parts store if you want it.

 

Mine doesn't have it either.

 

Must be a recent change. I have always bought my Valvoline conventional 10w-30 at Walmart.
Most recent purchase was this past June.
By the way, Quaker State (which is owned by Shell) full synthetic is the best motor oil on the planet, and as far as the "leak" folklore, if your engine leaks with synthetic, it's gonna leak with conventional too...

 

It can be a real thing with old seals. My old e30 leaked a huge pool of Castrol Edge full synthetic oil overnight after I changed it. Same grade conventional / high mileage blends never leaked more than a drop or two. Not a substantial quantity anyway.

 

Only thing you can get at Oreilly that I have seen that is conventional is house brand, Valvoline VR1 racing oil or Pureguard for a mower or compressor.

 

I wonder if the lack of availability is part of the supply chain problem that's been going on...

 

I don't think so! We put most of the oil on closeout. The new bottles all are coming in as blends.

 

Just got a jug of Castrol GTX and a Fram made in USA filter at Advance Auto for $30. They had plenty. Used Havoline in my old truck for 30 years and 315k miles but that oil is gone. We'll see how the new brand works.

 

Keep in mind that what is called "synthetic" is no longer what we might think of as true synthetic. Instead of the base stock being synthesized from other materials (like fluorine or natural gas), the newer FTC definition of "synthetic" in terms of lubricating oil allows highly refined mineral oil to be labelled "synthetic" now. What that really means is that most of the "synthetic" oil sold is truly made from mineral oil base stocks, not polyalphaolefin or polyol-ester like true synthetics used to be. Mobil still uses PAO and POE in in many of their products, but the Mobil1 engine oil is now in question.

In short, if you want mineral oil, buy the cheaper brands of "synthetic" like Pennzoil, Quaker State, Chevron, or some of the retail house-branded stuff and you will almost assuredly be getting mineral oil along with all the polymers added to make it "multi-viscosity" graded. SAE oils are always good for a laugh anyway, so even the numbers on the bottle are nearly meaningless. No reputable equipment, gear reducer, machinery, aerospace, nor implement manufacturer uses SAE grading for lubricants, leaving only the auto industry to cling to contrived, 1920's grading scales which are relative to almost nothing.

 

Brad Penn lubricants, made in USA, true dinosaur based oils…good stuff