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Old 08-10-2009, 09:17 PM   #1
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94' Oil and Maintenance.

I recently purchased a 94' Wrangler and I would like to change the cars' oil and run have a mechanic check out the engine with a computer. The Jeep has around 150k miles, it runs smooth for the most part.. theres a very small vibration from the engine every 20-30 seconds but its very minor. It usually starts on the 2nd time I crank the engine.

Would an oil change(what oil type should I choose?) or fuel cleaner improve my engine performance? Or perhaps a new air filter/ spark plugs?

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Old 08-10-2009, 09:39 PM   #2
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first things i would look at is the battery and charging sytem including battery cables to starter and grounds. then i would look at spark plug wires cap and rotor. that covers your major electrical. filters(air and fuel), oil change covers normal maintanance. lately seeing alot of posts about crank sensors crapping out, might be good insurance to replace. all in all remember its a 15 year old vehicle and while it may not be perfect a few little things will keep it running right.
congrats on purchase.

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Old 08-10-2009, 10:04 PM   #3
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Injector cleaner or
give it a seafoam treatment
maybe give it a full service trans/tranfer/rearend
just for piece of mind
unless jeeps oils look new
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Old 08-10-2009, 10:41 PM   #4
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Is there any particular brand of oil, or oil type I should use? I've already checked it and it looks fine, for spark plugs I'm thinking of getting Bosch spark plugs, are these optimal?
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Old 08-10-2009, 11:59 PM   #5
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Oil brand is your choice. You might think about synthic (sp) oils for all your drive train. Auto or 5 spd? Also, change plugs, wires, distribitor cap and rotor. Jeeps can be picky about the plugs used, I suggest you go with OEM, which is/was probably Champion. Check the quality of your coolant, consider flushing the coolant system, and replacing the coolant. Good luck, and welcome!
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Old 08-11-2009, 12:01 AM   #6
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please do not hurt our ears...........you did not get a car, you are now a jeeper. oh, welcome aboard.
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Old 08-11-2009, 08:43 AM   #7
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Wow did he just call his jeep a car ? Thats a NO NO !!! I have a 94 and i use valvoline durblend its good oil for high mile JEEPS lol welcome aboard!!
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Old 08-11-2009, 10:47 AM   #8
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Well, today I went ahead and went over to my local mom and pop mechanic shop and they recommended one of two things:

a) Buy my own parts (for a tune-up) and they can install it for a lower price.
b) Put the fuel injection system in some solution and do some ultrasonic.. sound gizmotronic, honestly I didnt understand squat diddly. It supposed to leave the fuel injection clean and brand spankin' new. He said he'd charge about 25$ per injector.

I went with the former rather than the latter. I spent about.. 180$ in new parts. I tried going with the most expensive since that usually means it'll last longer.. I think.

Heres what my shopping list consisted of:

Mobile 1 Oil: 10-40 Full Synthetic
Prostart: Custom Fit Wire Set
BWD: Rotor and Cap
Purolater Pureone: Oil Filter
Bosch Platinum Fusion: Spark Plugs (about 9$ per spark plug)
Lucas Upper Cyclinder Lube: Was given free w/ purchase however on the side it reads a testimonial about it being used for Diesel Engines so I'm hesistant to use it.

Anyways my bad its a TRUCK not a car, hopefully 50 push-ups make up for the insult.
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Old 08-11-2009, 11:10 AM   #9
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No, more expensive is not necessarily going to last longer. You need to do the research to find out what runs optimally in your jeep. Buying platinum plugs, and full synthetic in my opinion is overkill. You would have done just as well with good ole Valvoline Maxlife and Champions.
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Old 08-11-2009, 11:29 AM   #10
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Quote:
Originally Posted by Dare2BSquare View Post
No, more expensive is not necessarily going to last longer. You need to do the research to find out what runs optimally in your jeep. Buying platinum plugs, and full synthetic in my opinion is overkill. You would have done just as well with good ole Valvoline Maxlife and Champions.
I agree the oil is overkill and so are the plugs. These Jeeps like the plain old champion $1.50 plugs the best. I would recommend taking back those plugs it will run much better.
For oil I prefer 5w-30 , I always use Valvoline conventional oil.

Good luck and welcome to the world of Jeeps
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Old 08-11-2009, 11:40 AM   #11
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Quote:
Originally Posted by Jeep_Geek View Post
These Jeeps like the plain old champion $1.50 plugs the best.
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Old 08-11-2009, 12:55 PM   #12
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I also have a 94 Wrangler and just changed the oil and spark plugs. I used Autolite Platinums and Valvoline 10W30. It helped a little bit; runs smoother and starts smoother. That is all that I did though. I haven't messed with anything else yet. Congrats.
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Old 08-11-2009, 12:55 PM   #13
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Excuse me on that, I used Penzoil, not Valvoline.
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Old 08-11-2009, 01:03 PM   #14
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One more question and I'll be set to spend money on/ enjoy my new obsession. The bosch spark plugs as stated earlier are overkill and I asked my cousin aswell and he said pretty much the same thing "yea go w/ champions, they're cheaper". Would the higher priced Boschs' actually be harmful to the engine? Because if not then I'm just as happy to put those in. However if they are indeed Harmful then later this afternoon Ill just go return them and get the Champs. Thanks yall' been pretty helpful.
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Old 08-11-2009, 01:42 PM   #15
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yes they can be the bosh platinum 4's can burn a hole in ur piston but i'v only seen it in a four banger heard their ok in a 6 but i dont think i want to take the chance
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Old 08-11-2009, 03:00 PM   #16
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its not a truck either its a jeep, lol!! And I use Castrol GTX high Miles

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