...has wax in it...Castrol's new synthetics are very good, but I would stay way from their conventional oils.

Alright, someone explain to me how your car cares which oil is in it? This theory seems like an old wives tale to me.

There will still be oil leftover in the engine from brand A after a change. You switch to brand B and the oils might seperate and not flow together?? That would be my only concern. Like synthetic and then going to a regualr or vise versa. But I wouldnt think there would be enough oil seperation to cause any harm as oil will still flow no matter what.

Also switching back and forth could swell up your rubber seals throughout the engine because synthetic likes to seap through things because it is soo fine.

yea im not quite sure about all of it, i got into this about a year ago but now forgot everything :x

Everything oil has different types of molecule bonds and additive packages, each oil will have your engine wear in a certain way. Think of it this way, each oil will leave a certain grain (think wood-grain) in your engine, each time you switch oils it will wear that previous grain away and create a new one.

Mobil 1 :)

NO. Unless you like it coming out of your engine at the opposite side you fill it. Unless all your engine seals are brand new.

works for me, sorry to hear your engine leaks

Yep when I put that liquid seepage in there it does ;) Im sure most people who switch over to too. Actually my ening doesnt leak with mobil but it ticks like the night becuase mobil one sucks for lifter tick.

my engine doesn't leak or lifter tick, i guess i'm more 733+ than you ;)

When I switched to mobile one I had a leak for about a month or so until QPR replaced my clutch, I guess they also put in a new drain plug, I'm not sure what seals they replaced that might have fixed it but anyways. Now im at 120k with no leaks. :bounce:

No you just dont have 200k on a head and block ;) ;)

More interesting information: http://neptune.spacebears.com/cars/stories/mobil1.html

i use napa 10w-30 normal shit 1 50 a quart or somehting. Beat that !!

If you are looking for a cheap oil, use SuperTech from Walmart, it is $.84/qt and is nothing more than rebottled Penzoil, which is better than Napa (rebottled Valvoline).

Here is a little more synthetic oil info for you people:

Castrol's new Syntec has superior protection properties over Mobil 1, but does not last as long. If you change your oil every 5k miles or sooner, you'll see no benefit to using Mobil 1, but if you stretch it to 10k or so I would use the Mobil 1. Not a bad idea to change the filter at 5k if you plan on running 10k or more between oil changes. Synthetic oil actually protects your engine better once it is slighty used (~3k miles)...in other words, more engine wear occurs when the oil is fresh out of the bottle. Color is no indicator to the oil's condition so just becuase it is black or a very dark brown does not mean it is worn out.

think ill take you up on that idea heh

Royal Purple has very good protection qualities straight from the bottle, but get even 1000 miles on it and it is far inferior than just about anything out there. Real tests have proven time and time again that that stuff is nothing more than hype in a bottle.

Why are people still trying to argue? Ams oil is the devil. My father was involved in a class action lawsuit against them a while back. The company which my father works for had switched to AMSOIL for all their machines and robots. Everyone wore right the F-out. AMSOIL is still paying for them even now. I guess that's why their "oil" is so much money. Don't get me started on Quacker State (yeah that's how i spelled it). Bee's wax doesn't belong in you car. Rotella T or Mobil 1 or Castrol Syntec...take your pick.

Anything produced in Superior, WI is the devil....guess where the Amsoil factory/HQ is? If you are just looking for a cheap oil for a DD or car that isn't pushed too hard, Chevron Supreme and/or Motorcraft are pretty tough to beat.

And the Chevron can be had for cheap, most times.

Last I saw $.69/qt if you buy a 12 qt case with MIR at Checker.

You 2 should take it to the PMs your only talking with each other haha JK.

GO syntec!

...and you obviously. You've used both, besides the M1 leaking how did the engine like eack oil? Any observations regarding noise or performance?

Re: Synthetic Oil Study
 

have any of you heard of conklin products? i got this dvd from some one i worked with in louisiana during the hurrican repair. his commercial side used a roofing product from them but they also make lubes for auto among other things. i am going to watch it then if anyone want to see it i can send it to jet maybe he can post it in the video forum.

Re: Synthetic Oil Study
 

I saw this comercial once for Prolong...

Re: Synthetic Oil Study
 

royal purple is a really good synthetic oil made for so called high perf engines. comes in all weights get it at checker or o'reilly's

Re: Synthetic Oil Study
 

How wrong you are actually. RP fluids have very good initial protection but their additive package wears out extremely quickly.

Re: Synthetic Oil Study
 

not what i hear and have seen in comparison charts from diff oil companies but charts and actual real world trials are diff. ill have to talk to my diff oil reps and get more info between them i guess.

Re: Synthetic Oil Study
 

You are a dumby, please read over what S2Kracka had already posted two years back about RP. Their products don't seem to be made for street driven cars.

Re: Synthetic Oil Study
 

wow 2 years ago huh i have an outside study for amsoil royal purple and mobile 1 from less than 6 months ago seeming i work w/ car parts and oil everyday. you do know that formulas change and dont stay constant w/ oil right. but hey again what do i know i just work w/ oil distributors all the time.

i am done w/ this now and if you have any future opinions good for you what you think is what you think. i just go from good old fashion facts that i come across.

Re: Synthetic Oil Study
 

Virgin oil analysis is great and all, but the real tests to be concerned with are the ones performed with used oil.

Re: Synthetic Oil Study
 

How about instead of getting your panties all bunched up that you cite the study(s) you keep referring to? Perhaps provide us a link to where we can read it? :rolleyes:

Re: Synthetic Oil Study
 

Jakey, you dare to question a Jiffy Lube specialist??? How dare you!!

Re: Synthetic Oil Study
 

I worked at Jiffy Lube in Crystal, and as a company, we recommend Penzoil 10w30 for winter!!! :) I have experience!!!

Re: Synthetic Oil Study
 

Good info for sure.

Re: Synthetic Oil Study
 

Quit bringing back old threads newb.

Re: Synthetic Oil Study
 

ive used nothing but valvoline in passenger vehicles my whole life, same as my old man. never had a problem. rotella all the way every time i did an oil change on the semi's and dump trucks, and cheap fleet farm oil by the 5 gallon bucket in dozers, graders, excavators, etc. no oil relaed problems. ever. and thats 20+ years real world testing lol!

Interesting Oil Info
 

http://forums.pelicanparts.com/showthread.php?t=367300
http://ultimategto.blogspot.com/2007...yler-jark.html

Apparently some of the newer oil being sold in the last couple years has drastically reduced the amounts of certain additives due to stricter EPA requirements (Zinc, Sulfur, Phosphorus). Sounds like these additives alone are actually quite valuable, especially when it comes to people pushing their motors. Also I read the lack of these additives could be a partial cause of why we see so many turbo center section's needing rebuilds now a days while in the older days, vehicles that didn't even use BOV's had their turbos last quite a bit longer.

Anyhow just thought I'd share this so others can form their own opinions from it. I'm going to change my oil tomorrow before I hit the track Sunday, and may go check out all the oils they have at Napa and see if I can find some pre-SM rating stuff.

Re: Interesting Oil Info
 

lucas oil makes a zinc additive that you can run in there. We sell it at advance auto parts. Very good stuff and puts all the zinc and everything back into the oil.