i use conventional oil and change every 5,000 miles.

always wanted to try synthetic, but to replace rear main seal sounds like a bigger job just to run a synthetic oil! i have pushed my conventional oil change to 7,000 but usually do it at 5,000. to me if something ain't broke, why fix it?

the dodge engineers are on top of it and get paid to know the ins and outs of how the truck runs. why must we try and counter their findings? or go and seek advice from other engineers?

i've never taken my truck to get an oil change at the dealership but do they offer synthetic? just wondering...

why not conventional mopar and mopar filter...don't get me wrong though, i have been intrigued by mobil1

 

i thought synthetic oil had more detergents then regular oil?

 

Car Craft Article

 

good article but i think i will still run conventional. i aint driving a performance truck at 4500rpm. i rarely get above 2700rpm (and thats passing on the interstate) and normally drive at 1800-2000rpm. conventional 5w-30 i think is fine for year round

 

I am with ya on that one. I run 10w30 though. It does get cold here... but, I don't see it as an issue.

 

10w30 fully synthectic ,change around 3000 mi for piece of mind......we could go on forever , been disputed since day 1 of this forum......

 

Just an fyi, I get a 20% discount on my oil changes. The RP and K&N filter which normally cost just over $45 costs me around $37. Price isn't too much of an issue. I have heard that the synthetic oil may cause leaking, and I have been watching for it, and thus far have found nothing. I realize it's only been in there for a couple days, so i can't draw any conclusions yet. I shall let you guys know how the switch went in 5,000 miles or so. Btw, 5,000 miles is like 2-3 months of driving for me, so it's probably going to be a while. Also, my truck has 230k miles on it, so I'll be surprised if there are no leaks. I have already done the plenum repair, so that won't be an issue.

Also, do not EVER go to Uncle Ed's to get your oil changed. My roommate had his oil changed there, and they charged him $65 for it. It was the biggest rip off I have ever seen.

 

Hey RC^

http://www.uncleedsoil.com/products.aspx

 

OHHHH. So brown oil is actually a good thing. Here i am thinking that my engine is running dirty.

But then again, i use synthetic oil with a quart of lucas oil treatment. I think that has detergents in it (I know it has an anti foam additive).

That explains a lot. No wonder my engine was spotless when i changed the RRs.

FWIW, I was running castrol syntec BLEND (Bosch filter) for the oil change leading up to last weekend's project (With lucas). It was an autozone special, and the only synthetic on sale.

my engine could not have been cleaner. The oil looked brand new (on the lifters and the engine itself). But when i drained it. black carbon was in the oil. So it brought everything to the bottom of the oil pan.

--Dan

 

That's the whole idea behind NON-Detergent oil. It doesn't circulate that crap through your engine constantly. When it is flowing, the mere act of flowing will pick up various things, as it goes into the oil pan, there is significantly less flow, and things settle out in the pan, and STAY THERE. That is exactly what you WANT to happen. Adding detergents to your oil SHORTENS engine life.