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That's a pretty impressive collection of mopar in your signature!

Cool I'll take a look at that O ring. Also I said it had 4:10 gears, not sure what I was thinking it has 3:73 gears

Yeah when I was jeep shopping I knew I wanted a 4.0 because of its tough reputation. Mine is a Sahara and has the D44 with optional 4:10 gears and rear disc so it has plenty of torque and is a fun around town vehicle. Doesn't see much highway use, that's what the wife's camry is for.

Yeah I have looked into the process of changing the rear main seal, but its such a slight leak that I'm not really worried about it. Also like you said it's possible that its coming from somewhere else and just dripping there, until the leak gets worse I'm not very concerned with it.

I have a 2004 Jeep Wrangler with the 4.0. I bought it last year with 73K miles on it. My first oil change I went with mobile full synthetic 10W-30 because that is the brand oil I have used for years now in my vehicles. It might be in my head but the slight leak at me rear main seal seemed to...

Ahh Sorry about the typo knew something didn't look right. Yeah I am out of warranty by a thousand miles now so that's why I was thinking of extending it. I'm just anal about maintenance, but as you said I don't want to waste money either.

Factory recommended OCI is 5K miles or 6 months. I changed my oil with Mobile 1 5W-20 and a mobile 1 filter December 1st meaning June 1st will be 6 months. However I have only put about 2800 miles on the truck in that time. Should I stick with the 6 month rule or am I safe with the Mobile 1 to...

Most of it will be in town stop and go. I am old school and used to 3k or 3 month oil changes. I can adapt and learn to liv ewith 5k or 6 months I guess. It was just the engine break in that had me concerned. I wa sunder the inpression the break in oil was somewhat different than regular oil and...

I just purchased a 2007 Tacoma last night with the 2.7 Four Cylinder engine. In the scheduled service manual is shows the first oil change at 5K miles. I am having a hard time believing that on a brand new engine. I would have though you would have to chnage at 500-1000 miles the first time...

Gary that chart made up my mind. Most of my trips or short and in stop and go around town. After looking at it I feel the 10W-30 is probably my best bet and even though the oil pressure may be a bit lower at idle atleast I know the 10W-30 is circulating well. Heck after doing some research...

Drove around this morning for a bit. Temps are already about 85 degrees. I am holding at about 20 psi when fully hot idle and around 38 or so at 2K rpm's. So I guess I will just stick with the 10W-30 in my "ultra modern wave of the future cast iron block pushrod V8" Anyway thanks for the advice...

Not 1988 Tim 1968

I just said to heck with it. I went ahead and changed my oil this evening. I went back with plain Castrol GTX 10w-30 like the manual calls for. Even though my pressure may be a bit low at idle I guess untill it starts ticking I don't have anything to worry about.

The PCV valve and the screen under it are both new. SO you think it will be ok Gary Allen?

I agree I the 10W-40 would be fine I am sure, but I think I am just gonna go with the reccomended 10W-30 so my head can stop spinning from all of the options LOL. Should I stick with the Castrol GTX or would another brand be better?

I have never heard of the 302 blocks having this weakness? But I am so confused by all of the options now that I think I will just drain the 20W-50 and put the factory reccomended 10W-30 back in and call it good.

Thanks Paul that table is the exact kind of info I was looking for. I believe the original owners manuals for these cars actually showed 10w-30, 10W-40 and 20W-50 as acceptable. I know they showed the 10w40 and 10w30 not positive on the 20w50. But then they changed there minds and the last few...

Modern V8???? The bottom end of my engine is no different that the first 302's that cam eout in 1968.

Man there are WAY to many choices it gives me a headache LOL. I had thought of running 15W-40, here is why I didn't tell me if my reasoning is flawed because it may well be. I was under the impression that since the 15W-40 was mainly designed with diesel engines in mind that is was probably...

Oh I plan on running it only untill september when the temps drop back down a bit then I will swap back to 10W-30 or 10W-40. I just wanted to make sure I won't cause any damage for the three months I intend to run it.