[RangerDude35]

kind of a stupid question but im doin an oil change on my jeep for the first time tomorrow and was wondering if going with the high milage oil stuff works and if its worth it. also is it save to suddenly swicth from normal oil to this stuff suddenly with 131k on it? thanks

[ScotZ]

Originally Posted by RangerDude35

kind of a stupid question but im doin an oil change on my jeep for the first time tomorrow and was wondering if going with the high milage oil stuff works and if its worth it. also is it save to suddenly swicth from normal oil to this stuff suddenly with 131k on it? thanks

Man , If you have gone 131K and this is your first oil change. Id stick with whatever you had been using

Go with the high mileage. That is what is made for.IMHO

[schitzangiggles]

Go with a quality synthetic. Moses Ludel (the guy who wrote the Jeep Owners Bible, touts the advantages of it. Extended oil change intervals means more $$ in your pocket and less in the oil companies. I run Amsoil, love it and will run nothing but in all of my vehicles. But Its kinda like ford vs chevy. Just go with a quality synthetic. For more info check out www.bobistheoilguy.com or PM me.

[xxxflhrci]

Run whatever it has had in it for the past 131k. Obviously it has worked well if you still have a good motor. No need to switch now.

[RangerDude35]

ok thanks guys, i think ill just stick to what ive been using

[emyselfandi]

i just switced to synthetic at 189K. Most people will say that you souldn't switc on a high milage engine b/c it the cleaners in the synthetic oil will cause leaks to form. Well i'm leak free it its almost been 4000 miles (time for a new oil change). I think it comes down to whatever you want just make sure you change it like clock work when it needs to be done. Tim

[boomhower]

here's my theory: if it aint broken, dont fix it! meaning, if your motor is still strong and problem free at 131k, why change what you're doing? ive debated on using additives for so long now, and after adding that slick50 teflon stuff (got it for free so what the heck) and seeing no improvements (i have a fairly decent case of lifter ticking), i figured why not keep using cheap proline 10w-30??

i have debated using high mileage oil, but forget about synthetic. i would want to risk the horrible leaks that could occur. for those that did switch and had no problems, good for them. i just cant see switching to synthetic with such high miles. how much longer could it possibly make a motor run?

[FootballStud 63]

Ive been working in a oil change shop for the last year so Ive heard just about every gearhead trick. theres this guy that comes in with 400000 miles on his ford HD van with the origional engine who uses 2 quarts of 5/30 2quarts of 10/30 and 2 quarts of 10/40 penzoil in a mix I know everyone says that penzoil is crap but im just telling you what I saw. I run castrol 10/40 simply because all the mexicans that come in use either that or the 20/50 and they all have between 150000 and 200000 miles on their trucks. I also run a quart of lucas because I heard good things about that too.

O yeah and I did an oil change for a lady the other day who had bought a car new, put 24000 miles on it and just figgured out what changing the oil was. I live in oklahoma so I have to deal with this kind of redneck trash on a daily basis (i wasn't born hear so i can talk -=-=-=-=)

today a mexican dude came in to the shop and handed me a bunch of used oil in some oil bottles to get rid of for him. I pointed to the bottle and asked him if that was the kind of oil he had put in he nodded and walked away quickly. What the retard had done was gone to walmart and bought 5 quarts of automatic tranny fluid (clearly labeled atomatic transmision fluid on the bottle) that he thought was oil and changed his oil with that. Maybe when his engine blows and he will consider letting the professionals do the oil change and learn friggin english

just bored so i thought I'd lend my expertise

[schitzangiggles]

Originally Posted by boomhower

here's my theory: if it aint broken, dont fix it! meaning, if your motor is still strong and problem free at 131k, why change what you're doing? ive debated on using additives for so long now, and after adding that slick50 teflon stuff (got it for free so what the heck) and seeing no improvements (i have a fairly decent case of lifter ticking), i figured why not keep using cheap proline 10w-30??

i have debated using high mileage oil, but forget about synthetic. i would want to risk the horrible leaks that could occur. for those that did switch and had no problems, good for them. i just cant see switching to synthetic with such high miles. how much longer could it possibly make a motor run?

Go and check out www.bobistheoilguy.com
I guess the likes of Moses Ludel are uninformed about the ''dangers" of synthetic oil. I am starting to believe that everyone who talks smak about synthetic oils belong to the flat earth society. The leak occur because it is cleaning off the ''False sealing surfaces" caused by a build up of varnish and grime on the sealing surfaces. I run full synthetics and I have NO leaks and I have over 120K miles. Quackeerstate said if they can get people to change their oil even 500 miles sooner, they would stand to make another $240 MIL just in oil changes and another $460-500mil in ''incidentals" (wipers, lights, etc). Oh yeah they own Jiffy Lube and are only looking out for your interests. MMMkay?

[RangerDude35]

thanks guys for all the tips, i wound up putting in 10W30 and it hasnt been running better, so i think im going to stick with this. thanks again for all your help

[acejeep]

Originally Posted by emyselfandi

i just switced to synthetic at 189K. Most people will say that you souldn't switc on a high milage engine b/c it the cleaners in the synthetic oil will cause leaks to form. Well i'm leak free it its almost been 4000 miles

I did the same at about the same miles and had to go back within a week because of all the new oil leaks.

[schitzangiggles]

Give it time, as the synthetics may leak a bit at first but it should go away after 1000 miles. It is like giving your engine a quadruple bypass, it is cleaning all kinds of bad crap outta your motor. Go check out the website! Go and read the Jeep Owners Bible, 2004 by Moses Ludel. On pages 112 & 113 he talks about all of the pro's and con's of synthetics. The pros are way more numerous than the cons (upfront cost and short term leakage). Don't just take my word for it. Go and read the documentation, think out side your comfort box for a minute and read it with an open mind and go from there. All of the eveidence is firmly pro synthetic. The big oil companies would love you to keep using their products on their schedules. More $$$ for them.

[GuitarDude6567]

When I bought my new YJ about 2 months ago I changed the oil with Valvoline MaxLife 10W30. It has 154k and I thought long and hard about going for the MaxLife Synthetic but I didn't want to risk the leaks. Now that I think about it I wish I had gone with the synthetic. I know it is far superior to any regular oil.

[JOKER4INK]

I think that people are uninformed about synthetic oil vs. conventional oil. Synthetic oil is perfectly acceptable for vehicles with over 100k miles. It does not cause the seals to leak and is not thinner. It is the same viscosity as any other 10-30, 5-30, etc oil. It may seem thinner, but that is a misconception. It flows so much better than regular that it appears, but is not, thinner. Also, the detergents that are in conventional oil that help keep the motor clean, over time work against the oil and break it down. Synthetic oil is not affected where conventional is.
If you read the back of a Pennzoil Synthetic oil bottle, it even says that it is acceptable to use regular oil, then switch to synthetic. And, it is ok to go back to the regular oil.
I dont understand why people are so scared of synthetic oil. Do your research, not from one person or what you may have read in some newspaper article. Check with the manufacturer of the oil themselfs. If synthetic is oil so bad for your car, why do top end cars right out of the factory (meaning Vettes, BMW's, etc) use it? In my opinion, why wouldnt you want the best protection for your internals? Check with Mobil, they did a study on the ammount of wear on engines using conventional oil and synthetic oil. Synthetic oil has been proven to significantly reduce engine wear compared to conventional oil. Just my $ .02

[NIUPonyBoy]

No leaks with my 170k 4.0L and high milage oil.