I've mixed oils without any problems also. Just like Hammer, it's not a habit of mine but once in a while I do. In the old days, one did have to be careful with mixing some oils. Some were formulated for European cars and by extension, Japanese cars. The Brits used some different materials and metals in their engines and transmissions so you had to run oil that were approved for them. You did not really want to mix those in with the "American oils" in European cars, or American either. Now days, you can mix them but olther cars (pre 1980s) without the roller tappets require Zinc in their oil to protect the cam and tappets. Even though you can "mix the oils" you want to make sure you have Zinc.

 

My statement about "who do you believe" meant you see the oil manufacturers say one thing and a vehicle manufacturer say the other.

I could give a rats a$$ what YOU decide to do. Pour water in your crankcase for all I care. I also like the way you decide to talk for "everyone".

As I stated, I have done it and was just relaying information I've picked up from people in the industry, service manuals, etc...

Oh and btw, not that it matters, but I found the manual...

 

OK Hammer, I apologize to you and all on this site for what I posted and take back the post and that I was speaking for everyone else. Now lets back up and read what you posted…

Originally Posted by HammerZ71
But, I have a Jeep service manual around here somewhere and I know it specifically says in the thing to NEVER mix oils or coolants in a Jeep product. Soooo who do you believe??? I just think it removes all doubt by using the same damn brand all the time.

Here’s my revised reply

This is a 4th Gen Ram forum that deals with the 2009 and later Rams. The Jeep service manual from some unknown period of time that you don’t list and make reference too and are trying to apply to these vehicles is not relevant.

 

I don't think the year or model is really relevant as long as we are talking about a relatively modern engine. I took the way this thread turned as to if mixing oils in general is a good or bad idea. The manual in question is for 1999-2004 WJ Jeeps, a product that uses (among other engines) the 4.7 V8 which, although modified slightly is still in use today in Rams. So I would say it's at least a slightly relevant source of reference. Of course it ALSO says to ONLY use Mopar brand fluids, so take it for what it's worth.

Again, I'm not saying that by mixing two different brands of oil is gonna make your engine go BOOM, all I've stated is that according to ONE oil company engineer I've talked to, he told me (probably about a dozen years ago) that an additive in one brand of oil can make changes to the properties of another additive in another brand, making it not do what it was put in the oil to do. Also that Chrysler, in at least one product, specifically advises against it.
I also have the 3rd Gen Ram service manual in .pdf format, at my convenience I'll give a look at it and see if they specifically make mention about oil mixing...

 

i think this is like the 87 octane 89 octane debate. you can get by mixing oils just like you can get by using 87 octane gas and probably not have a problem but why be a cheap *** on a 45 thousand dollar truck?

 

If you paid 45K you got screwed

 

Alright, I've sat back and watched long enough.

For those of you who want to argue for the sake of arguing, take that $h!t somewhere else, please.

Theres alot of guys on here who just want to be right, and well, we cant all be right.

You can mix SOME oils, but the question is, why would you? because you can? so you can then argue it on dodge forum? sure, go ahead, I dont care, its your truck, not mine.

But when people such as myself are posting real threads about serious $h!t, and not the same, just bought a truck what lift, whats the biggest tire, whats the coolest sticker... seriously

HELP PEOPLE

but save the BS for your toilet


and by the way, dodge forum is a joke on other forums for this exact reason, and most custom and serious enthusiast, tend to stay away from this forum I have just recently learned.

I have been on here for years, and am sick of watching the little girl bickering.

and yea alot of you are about to backlash with more ish, please just dont. save it.

This is America, where everyone can voice their two cents.

can you do stuff, sure, maybe, is it the best thing to do? usually not, sometimes its ok, sometimes your fine.

 

he means this isnt 1995, where a new car is selling for 12 grand, the price of everything is through the roof, these trucks arent even priced fair anymore, gas is over $3, and most people dont have jobs. so everyone on here needs to get frickin real. Why risk screwing your new truck up, that is supposed to last you through one of the roughest points in American history. But you know what, __ck it! these guys can do what ever they want to their trucks, only if something goes wrong, I dont want to hear about how the dealership is raping them and they are broke and this and that

 

Well said and for the most part I tend to agree with you. I know a lot of other forums take shots at DF, but I'm on them all, and until recently have even been a moderator on another one. I think most of the shots we take here are because of our size, at almost 200,000 members (about 3500 active and by active I mean log on at least once every week) we are a constant target on other forums. Also, most other forums I'm on are model specific or at least dedicated to just one type of vehicle. You tend to get a closer knit group on those types of forums. By servicing ALL vehicles made by Chrysler and being more generic, we tend to get ALL the newbies first and newbies are easy targets for some older members trying to show who's boss. Because we tend to get all the Newbies, yes, this forum is full of the "how big a tire" posts that we are constantly made fun of about on the more "hard core" forums. We also (by far) have the youngest average member age - of all those who have registerd their DOB. Believe it or not, our average age is under 20. I'm on a forum that is basically a "by performance shop guys, for performance shop guys" forum where at 44, I'm UNDER the average age! Hate to say it kids, but for the most part y'all are immature and just look for fights - but that's ok, I was the same way 20 years ago.

BTW, I just recently gave up being a mod on that other site because I felt all I was doing was being a referee - if you think the bickering is bad here (and I don't deny that it is) - there are worse, trust me...

 

Your argument is like saying that my shirt repels elephants - I don't see any elephants so the shirt must be working.

The mfg recommended dino oil works fine, mixing oils - I guess if I were in a bind and had to drop an extra quart I wouldn't worry about it. Otherwise, who cares. Truth is that most vehicles would run fine if you dumped in 1/2 a quart of bacon grease with the oil. Seems like kids who got their first car in the 90s think that the internal combustion engine is some highly sophisticated machine that requires handling like a piece of fine china.