[Nymisus]

ok so i am about to change the oil in my 95 yj 2.5.....first time only had it about 2.5 months and it has about 97k on the engine, was wondering if anyone suggests a specific oil brand, i know 10-30 but are these higher milage oils better?? or would penzoil be just as good??

[4wheeler4CJ]

I have always used Castrol oils and NOT synthetic. Plain old Castrol with Regular oil changes. And I have always driven my vehicles to well over 200k with no major problems (water pump or something of course, but nothing oil-related, lol).

On every vehicle I have owned and currently, I switch from 10-40 to 20-50 at AROUND 100k (+/- 20k), using my own judgement as far as how I drive/use the vehicle. Doesn't matter whether it is a 4, 6, or 8, I always switch at some point around 100k. This is my strategy, and it has ALWAYS worked great for me. Never had a motor lose ANY power, smoke, knock or anything.

Listen to all the other opinions and form your own strategy.

(Sold a 1989 Grand Prix 3.1 V-6 last year with 230,000 miles and it ran like it was new.....would lay a 30 foot patch with no effort, and it was automatic, LOL)

[stripperluva]

Chevy tahoe-157,000
BMW 740i 139,000
BMW M3 E46 61,000 but this one is raced SCCA
Volvo V70 wagon 115,000


I use or used Royal purple in ALL of these and love it.

[xxxflhrci]

Just pick the oil that suites you and use it. The "what oil is best" question has no correct answer. Get a quality oil, quality filter, and change it when it needs it. You won't go wrong. Most gearheads have certain brand and weight that they use for a certain reason and will defend there reasons for the use with some kind of selfmade logic that they have formed. I drove on this many miles with this brand, ect.....so it has to be good stuff. I don't think that what brand you use is as important as just making sure that you change it often. I'm one of those brand specific guys and would die switching brands. On the other hand, my old man, who drives about 50k a year and runs every car for 200k+ is not. He buys what ever is on sale and dumps it in. He has been getting 200k miles out of every car that he has owned for the past 30 years. By saying "change it when you need it" I mean at least every 3000 miles. Now for the old man, he changes it every 7500 miles, which also makes me cringe. But if you look at most owners manuals for cars made in the last 10 years or so, you will see that they call for 7500 mile oil changes under normal conditions. Will I go that long? Hell, no. I also have the standard "change it every 3000 or die" thinking in my head. There is no right answer to your question. Just form your own battle plan. If you use good oil and change it when needed, you will never have an oil related failure or truly wear out an engine, IMO.

[RTStork]

I agree with xxxflhrci. I use Amsoil 5W30 and change oil every 3,000 miles. I have used Mobil1, etc and all are quality products. If you don't want to pay extra for the synthetic then I would suggest a high quality dino oil like Valvoline or Havoline. Change it every 3,000 miles and you should get plenty of life out of the engine.

[planetj]

Originally Posted by RTStork

I agree with xxxflhrci. I use Amsoil 5W30 and change oil every 3,000 miles. I have used Mobil1, etc and all are quality products. If you don't want to pay extra for the synthetic then I would suggest a high quality dino oil like Valvoline or Havoline. Change it every 3,000 miles and you should get plenty of life out of the engine.

I am a user and dealer of amsoil.What in the world are you changing it for every 3,000 miles for?$$$$$$$$$$$$$$$

[RTStork]

Originally Posted by planetj

I am a user and dealer of amsoil.What in the world are you changing it for every 3,000 miles for?$$$$$$$$$$$$$$$

I know its overkill, and I'm starting to go longer between changes. I just get paranoid when I see the oil get a dark color.

[LoOpY]

oil is oil is oil. the rest is marketing

[planetj]

Originally Posted by LoOpY

oil is oil is oil. the rest is marketing

I don't even know how to respond to that lame coment.So i won't

[planetj]

Originally Posted by RTStork

I know its overkill, and I'm starting to go longer between changes. I just get paranoid when I see the oil get a dark color.

I thought the same thing when my girlfriends truck hit 17,000 miles one her oil change. the oil started to darken to. But we use a by-pass filter and a dual foam air filter, that puts use in a catagory above the rest on dealing with oil changes.
For ever and aver people have looked and smelled oil and said it was good or bad. but with amsoil the base stock used and the additives used are so strong that you have nothing to worry about.changing the filters on time is the only limiting factor with amsoil if your engine is mechanically sound.They have had 12 month, 25,000 mile service intervals since the early 70's. That should make you feel a little less parinoid.
And don't worry,if nobody was ever skeptical about anything out of the ordanary,then we would all be victoms of some scam or another.

[xxxflhrci]

Originally Posted by LoOpY

oil is oil is oil. the rest is marketing

I don't see that comment as being all that lame. There is a lot of truth to it. After all we buy most things based on the claims made by the manufacturers. Amsoil is no different. Planetj, you are marketing your product right here and telling us how great it is based on the marketing plan that you learned in the pyramid scheme class that they taught when you got into selling the stuff. No offense intended, but the pyramid selling method is how Amsoil is sold. (Yeah, I know. They told you to call it "Multi-Level Marketing". Sounds better than "Pyramid Scheme".) You can't walk into a autoparts store, much less WalMart and buy some. I've never figured out why such a reported great product wouldn't be readily available. I'm sure Amsoil is not a bad product. I just can't say whether it is "revolutionary great" or not. I have to see it myself or hear it directly from a source that has used it since the '70s in vehicle after vehicle with only 25k oil changes and so on.. A salesman throwing me a sales pitch doesn't work for me.

But who knows, maybe the Amsoil pyramid scheme, get rich quick scam is the way I'll make my first million. What does it take to become a "dealer"? 30 bucks? Yall, watch out. I might just start throwing propaganda and testimonials at ya trying to make a quick buck selling some of that Amway oil.

[LoOpY]

Originally Posted by planetj

I don't even know how to respond to that lame coment.So i won't

i wouldnt know, being an auto tech student and all.

but feel free to explain to me the differences besides price. it all comes from a hole in the ground (im not talking about synthetics) and then manufacturers put in a few additives.

its getting as bad as pennzoil's new "winterization" oil. they make claims that it starts flowing through your motor faster than regular oil. 5w30 is 5w30, its viscosity is variable dependant on temperature. theres no way that theres a difference, but the average automotive consumer doesnt know or care about this. they just say "oh, its winter, maybe i should get the winter oil!" its like IsoHeet... oh god, dont get me started on Isoheet. theyve been putting alcohol in gasoline for round 30 years to prevent gasline freeze, but does the average consumer know this? no

yatta yatta yatta, oil is friggin oil

[19OlllllllO41]

nothin but VALVOLINE imo. but if you go with anything else just make sure it dosent have any ash in it. ive seen the inside of some engines that ran on oils with ash and they had more sludge in em than a sewer does! but engines that ran on oil with out ash were clean as can be. just my 0.02

[planetj]

Originally Posted by LoOpY

i wouldnt know, being an auto tech student and all.

but feel free to explain to me the differences besides price. it all comes from a hole in the ground (im not talking about synthetics) and then manufacturers put in a few additives.

its getting as bad as pennzoil's new "winterization" oil. they make claims that it starts flowing through your motor faster than regular oil. 5w30 is 5w30, its viscosity is variable dependant on temperature. theres no way that theres a difference, but the average automotive consumer doesnt know or care about this. they just say "oh, its winter, maybe i should get the winter oil!" its like IsoHeet... oh god, dont get me started on Isoheet. theyve been putting alcohol in gasoline for round 30 years to prevent gasline freeze, but does the average consumer know this? no

yatta yatta yatta, oil is friggin oil

Well,I learned this from a seasoned master mechanic that ownes his own "oil rig" repair business and teaches at univarsal technical institute. That the difference between oils(even synthectic) is, what is the company is willing to spend on research and development, ingredients to make the oil,advertise the oil and sell the oil. Don't buy "acme" brand petroliem oil that isn't SAEcertified and put it in a blown350 4x4 and expect a mirical. No money was spent on the absolute best possible base stock and additives available on the market,so you won't get the best results. And also, one factor that effects all engines no matter what oil you select out of the 100's of choices we have.Is the use of a by-pass filter.No other method completly removes water and wear particals like a by-pass filter will.On top of oil quality,those are two huge factors of how well oil is going to work in you motor.

[BorlaJeep]

here's my take on it...I work as a mechanic for my father and have been for many years now. He owns his own automotive shop and I have seen how many different oils react. What we use is gulf series 3 15w 40. What it is, is a fleet oil. These (fleet oils) are designed for use at lets say a construction company whereas the company can't afford to buy like 10 different oils for all of their machinery but need something that is good for use in lawnmovers to dump trucks. I have used it is my jeep since day one. Gulf oil alone though is a very good oil, along with mobil 1 and valvoline. I would highly recommend not using quaker state oil. It is the sh*t of sh*t. And now they make oils for 4*4's which is a bunch of crap. I have seen too many cars blow engines from using that crap. In the commercial dennis leary says, "don't make me send you the lab results." I would really like to see those lab results. Anyway, whatever you choose to use, don't use 5w oils. now the EPA thinks that every car should use 5W oil like 5W 15 but the truth, I would rather piss in my engine than put that crap in. I mean what are you really getting. 1/10 of mile per gallon gas savings. The EPA are full of sh*t, and they know it. Good luck with whatever you use.