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Old 02-15-2007, 11:35 AM   #1
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high mileage oil?

do any of you guys with higher miles on your vehicles use the high mileage oil whenever you change it. i was curious if it makes any difference.

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Old 02-15-2007, 03:36 PM   #2
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100% Synthetic

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Old 02-16-2007, 01:04 PM   #3
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I have been using the high mileage blend for about two years on my 94 YJ. I was having issues with a noisy lifter around 80,000 miles. It would quiet down once it warmed up. It seemed to get worse as I got closer to my 3,000 mile mark for service. I started using the high mileage stuff and it has been quiet since. It is not that more expensive. I know some will disagree.
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Old 03-08-2007, 08:20 AM   #4
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Is it ok to use Synthetic in a YJ with 130000? I have been using the high mileage Penzoil was thinking about going to Mobil 1 synthetic.

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Old 03-08-2007, 08:41 AM   #5
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Going to synthetic "oil" can't hurt your vehicle as long as you are using the recommended type for your application.
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Old 03-08-2007, 11:03 AM   #6
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I still say that as long as you have been responsible and serviced your vehicle regularly and properly that ANY modern oil will do the job. Changing filers and servicing properly will maintain a modern engine well into the 200k range. The problem comes in when you buy a jeep that you do not know how it has been maintained.
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Old 03-08-2007, 06:21 PM   #7
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I still say that as long as you have been responsible and serviced your vehicle regularly and properly that ANY modern oil will do the job. Changing filers and servicing properly will maintain a modern engine well into the 200k range. The problem comes in when you buy a jeep that you do not know how it has been maintained.
I couldn't agree more.
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Old 03-09-2007, 04:43 PM   #8
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the only problem i see with going to synthetic, would be the oil changes. i happen to end up in water and mud quite often, and i usually change my fluids after. it is usually before the scheduled change. the high mileage stuff is about the same price as the regular, so changing it more often isn't going to cost more. on the other hand that synthetic stuff is expensive.
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Old 03-09-2007, 06:31 PM   #9
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The way I look at it, it's cheap maintenance. I'd rather change the oil(s) everytime I go wheelin' , than to have to overhaul the motor, or something else bad. Of course I don't mean 'every' time, because there's not a reason to change it -every- time. I'm one who sees the cost of lubricant, even synthetic, as being cheap compared to other repairs that might occur from not changing oils. My $ 0.02
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Old 03-11-2007, 10:00 PM   #10
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Originally Posted by Dare2BSquare View Post
I still say that as long as you have been responsible and serviced your vehicle regularly and properly that ANY modern oil will do the job. Changing filers and servicing properly will maintain a modern engine well into the 200k range. The problem comes in when you buy a jeep that you do not know how it has been maintained.
X2 IMO if you change your oil frequently, using high mileage or synthetic oil, is an easier way to spend more money! I have used Penzoil, Valvoline or Quaker Stae for years, and am almost to 120k.
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Old 03-11-2007, 10:48 PM   #11
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I always purchased regular oil for my 92 cherokee which i changed more or less at 7500 miles. it now has 279,000 miles on with no engine work. at 7500 miles it has used 2 quarts of oil. most of that has leaked out of the rear main seal. On my 06 rubicon i will change oil at 6000 miles with just regular oil.
I am not cheap I just don't believe in changing oil more than that
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Old 03-12-2007, 11:44 AM   #12
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Glad that has worked well for you. But, if anyone wheels hard in dust, mud or extreme conditions, I would not be comfortable with going that long between changes. I would suspect that you don't offroad much. Changing the oil regularly is like buying insurance.
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Old 03-12-2007, 02:00 PM   #13
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I don't say that there is anything wrong with regular (dinosaur) oil. There isn't . From what research I have done, I believe synthetic is better. How much better ? That is debateable. I don't believe it's better for most peoples regular driving situations, mine included. But I like the idea of it, and it's worth it, to me, to use it for that "peace of mind" that I get from using a "better" quality lubricant.
When I had an older car, I used High Mileage Oil. Did I see an improvement in performance ? No. Did I feel better about using it in my older (pre-1975) car ? Yes.
Do I enjoy changing the oil in my car ? Yes. I get satisfaction out of draining dirty (even if only slightly) oil out, and putting clean fresh oil in. Can I back this up with some hard evidence, or some kind of science ? No.
I knew a guy once who claimed he bought his 1972 Ford pickup new, and never changed the oil, just added it when the level dropped down (this was in 1990). Truck ran great. Driven daily.
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Old 03-17-2007, 07:00 PM   #14
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I changed to High Milage Penzoil on my 89 Wrangler 110,000 miles and 95 Ford F150 5.6 liter 180,000 miles..i use alot less oil as i was using Mobil 1..
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Old 04-02-2007, 03:15 PM   #15
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The problem I've experienced with the full synthetic in an older engine is that the molecules are smaller so you'll have more blow-by, which means you'll be burning more oil than you would regular oil. This happened to me in my car when I changed my oil before a long road trip and ended up almost running it dry. The best thing to do is switch to full synthetic in a new engine and continue using it. With the older engines use the high mileage stuff if you want something different.

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