Flat or Roller Lifters on a 2000 4.0?

[cmlind]

2000 Jeep Cherokee 4.0. Does this engine have flat or roller lifters in? I am curious because if I have flat lifters, I want to make sure that the oil I use has enough anti wear addititives in it to protect them.

[Dale Aeppli]

Originally Posted by cmlind

2000 Jeep Cherokee 4.0. Does this engine have flat or roller lifters in? I am curious because if I have flat lifters, I want to make sure that the oil I use has enough anti wear addititives in it to protect them.

JEEPS HAVE FLAT LIFTERS. ROLLER LIFTERS ARE USED WITH PERFORMANCE CAMSHAFTS. USE GOOD OIL AND FILTERS DALE

[cmlind]

Thanks, that is what I thought. I might use a dual rated diesel oil with more antiwear additives. These newer GF-4 SM oils are getting light on the antiwear additives.

[JDPascal]

Originally Posted by cmlind

Thanks, that is what I thought. I might use a dual rated diesel oil with more antiwear additives. These newer GF-4 SM oils are getting light on the antiwear additives.

What information do you have about the GF-4 SM oils that indicates they are light on the antiwear additives??

All the new API classified gasoline engine oils have to be backward compatible with the requirements for the previous classifications.....Don't they???

JD

[cmlind]

They are backwards compatible. The thing is that the zinc and phosphorus is being reduced for emissions reasons. There are newer replacements like Moly and Calcium. Some GF-4's will show more wear metals in analysis than previous oils. Check out www.bobistheoilguy.com. There is a lot of info about it there.

[scrap_iron]

good link, cm - I wound up reading about oil filters for an hour until my brain went into overload. I guess I should reconsider using Fram filters. Any suggestions specificially for the 4.0 jeep motor ? It seems that the compromise between great filtering vs resticted flow is the key.

[cmlind]

I like Wix (Napa Gold) or Purolator. I don't like Fram and the verdict is out on the champion ecore since it is new.

[JDPascal]

Originally Posted by cmlind

I like Wix (Napa Gold) or Purolator. I don't like Fram and the verdict is out on the champion ecore since it is new.

The wix, Napa and Purolator are my top choices as well.

Originally Posted by cmlind

2000 Jeep Cherokee 4.0. Does this engine have flat or roller lifters in? I am curious because if I have flat lifters, I want to make sure that the oil I use has enough anti wear addititives in it to protect them.

What oils are you considering for the 4.0 engine???


JD

[cmlind]

I have been using Havoline/Chevron in other vehicles. If I go for regular gasoline oils, I am thinking about either Citgo Supergard or Mobil 5000. The Citgo is cheap and kind of a 'sleeper' product. It is real good for the price. The Mobil is new, so I will do some research, but it seems to be a near synthetic oil at a good price and also carries the CF diesel rating.
The other choice would be to go for a dual rated diesel/gasoline CH/SL rated oil. Most likely would be Mystic.

I have some time before I need a change, but am leaning towards the Mobil. I can find it anywhere at a decent price. I may add 1/2 oz per quart of oil with Valvoline Synpower oil treatment to beef up the additives some. Less is more with this stuff though. I would not follow the directions and add the whole bottle. To be honest, there is so little difference between brands with API ratings that it is probably is a waste of my time to reasearch it, but it has become kind of a hobby. I want the peace of mind that I am buying the best value between engine protection and price. I guess you could call me an oil nut!