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What is your favorite motor oil?

What is your favorite motor oil?

  • Total voters
    389
Amsoil 10-40 in the 440. Used Royal Purple for years with no problem.
 
Used Mobil 1 in our 2000 Durango for awhile but we short tirp it so much that the oil got too dirty to leave it in for very long and that's one of the reasons to use syn oils. It's too expensive if you have to change it every 3 or 4000 miles. My plan was to change the filter every 3k miles and top it off and keep an eye on it. If you do sample testing, the oil is still good but becomes full of contaminates and that's the main reason for changing it and how long does syn oils last? If they didn't get dirty, well, very long time. Highway driving is the best thing for your oil (vehicle too) and it stays very clean for an extended amount of time. Even my diesel stays clean for a long time on the highway but stop and go/short trips put a lot of combustion by products into the oil and pretty quickly. Even natural based oils will last a long time with highway driving. Today's oils are pretty good (if you don't flat tappet cam) and your engine will last a long time with either type of oil. Anyways, I'm using Shell Rotella in everything now.....
 
I use Wal-Mart too. 108 changes in my '92 jeep. Finally gave it away, it was still fine. 98 changes in my '01 Town and Country. Getting tired of it and am ready to give it away too. Untold number of changes in my '87 GMC cargo van. May never need to buy another if it keeps running. 34 changes in my '06 Cobalt, still going strong. Doing it myself with Wal-Mart probably saved enough for two or three new engines. I trade the used oil for tire mounts and stuff I can't do in shop. Don't know if I would use it for all out racing though I would try a pass or two and send the used oil in to be tested, like I do at every oil change for my Detroit 60.
 
Bought my 95 dodge Ram 5.2, FWD in 96 with 7k on it. Used Mobile One. Ran it 10K between changes. I'd throw a new Fram filter in it at every 5k, if I remembered. It now has 246,000 and runs strong, but starting to use oil. Can see it if driving behind when I let off the gas. Valve guides/seals? So, got about a quarter of a million miles on a 10,000 mile oil change schedule.
 
The castrol 20-50 syntec has on the bottle for 1975 and older engines (right about the last years for no cats) Just looked at Autozone and they have it $7.99 a quart. Castrol web site said that Wal-mart and K-mart will also carry it.
 
This Note is for the BANKERSTOY, Bradpenn is not well represented in the west. The SEMA show in Vegas will be here in the next few weeks, They were there last year and if they show up this year I will let them know about the complaints.I know they were looking for distributors.Now don't quote me on this but I think to be a distributor you must buy 1 pallett that may be 60 cases. I'm sure I'm wrong.
 
Valvoline VR1 10-30 in the Charger, Mobile 1 in the the wife's ride. My company truck gets Napa full synthetic.
 
Mobil One in the R/T and Valvoline Premium Blue in the 70 300/
 
Ran across this site and forum when getting smart on the formula changes: http://www.bobistheoilguy.com/

Oh, and I primarily use Valvoline, but have been known to grab Castrol too. I keep a couple quarts of Royal Purple on the shelf for topping off in the '68.
 
Brad Penn

Just some info.......Found out at the SEMA show that the closest distributor in the west is in Colorado. Contact Norm Fisher at [email protected] You can buy any amount at a wholesale discount. This what I was told from the owner.
Also anyone that wants to be a distributor in the west, you do not have to buy a large amount and they are willing to work with anyone interested.
For more info try www.bradpennracing.com
 
Mobil 1 for the past 20+ years. I run it in everything, even my John Deere riding mower. Before that it was Dino Castrol. I went to Mobil 1 after reading a report of a test that was conducted in the late 80's-early 90's. In the test, if I can remember correctly, there were a number of American made vehicles and Foreign made vehicles used. Half of each make were run with top of the line dino oil and the other half with Mobil 1. The test simulated city and highway drving and all were run until 200k miles. The oil and filters were changed every 5 or 10k miles. All engines were removed and taken apart. The parts in the engines ran with Mobil 1 had tollerances within new part specs. I think that's the just of it. I know it impressed the heck out of me, as I carry mail on a rural route and drive approx. 125 miles per day including around 30 miles of dirt road. I run the fresh oil and filter for 5000 miles, change the filter, top off the oil, and run another 5000 miles, and change oil and filter. Never have had an engine problem.
Just a personal experience.
cwmoss
 
Blonde, brunette, or redhead. Boobs, legs, or ***. These are questions and opinions that will never be answered! In my days growin-up, 100k was the limit! But now its barely broken in! I have to say that the most important thing giving long-life to motors these days is fuel-injection. Gone are the days of "cylinder-washdown" with fuel. Precisely metered FI eliminates excessive richness [less oil contamination]. More precisely burned fuel equals less combustion by-products that are corrosive to engine internals. All the commercial oils have reached a point where I dont think you can really go wrong with any of the premium brands. As far as the demands of true racing motors, that is beyond my knowledge, and I wont even try to offer an opinion there.
 
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