I used castrol for my first oil change... Is mobil 1 better/worse overall... Help me compare the two.


Thanks

all i know is that ever since i blew a motor with cheap oil i only use mobil 1 now 15/50 in my supra , i ran 15/50 in my bmw and for the scion i will run the thinest ____ they got.

Peruse this forum.

http://theoildrop.server101.com/cgi/ultimatebb.cgi

too much nonsense no cut and dry comparo's

Ive been told that Castrol is the only approved motor oil for turbo engines- and is best suited for Imports-

Mobil 1 is best for domestics....

Like I said thats what I was told buy an oil rep for NAPA- Anyways thats my .02...

What are the differences between domistic and imports? Sounds like a line from Castrol.

I use Mobil 1, works great.

Imports; Honda, Toyota, Scion, Lexus, Acura, ....

Domestics; Chevrolet, Ford, Dodge, Chrysler.....

The guy said Mobil 1 is good for anything, But Castrol is better for imports, and higher revving engines ( hense impports )

:lol:

I've been using valvoline synthetic.. Just to be different.

lucas http://www.lucasoil.com...but between the two you listed ill take mobil

I know the difference between an import car and a domestic car. My real question is what is the motor difference between the two. I have always heard that imports rev higher, I don't believe that. Any 4 cylinder car will sound like it rev;s. higher, but does it really.

Most cars that I have owned highway cruise at approx. 2300 - 2500 rpms, that was 8cyl., 6cyl., and 4cyl. I owned a 73 340 Duster with 3:23 rearend and it cruise at highway speed at approx. 2500 rpms and during my normal excelleration would shift at approx. 3500 - 4000 rpms. If I romped on it this shift change would happen between 5000 - 6000 rpms and if I manually shifted the automatic I could crank her out to 7000 rpms with no problem.

My Xa is the first import car I have ever owned and on normal excelleration it shifts at approx. 2500 - 3500 rpms and has a highway cruise at 60mph of just around 2500 rpms. How is this import any different than any other car?

Many NASCAR owners use Mobile One and they turn over 9000 rpms during a race.

I guess what it comes down to is everyone has a different idea on what type of oil to use and the oil companies will tell you anyting to sell you their oil. Pick the one you want and if you change your oil regularly you won't have any problems.

Ok... I had this whole debate before along with the debate about using synthetic in the first place. There is a website - I believe it's something like www.bobtheoilman.com or something that does actual SCIENTIFIC comparisons. It's vaguely technical and has a lot of charts and stuff, but I can summarize quickly for you:

IF YOU REALLY CARE ABOUT YOUR CAR ENOUGH FOR THE SLIGHT ADDED BENEFIT OF SYNTHETIC TO BE WORTH THE MONEY, THE ONLY ONE TO USE IS MOBILE1. The chart proves it. There are really only two things that make synthetic worthwhile. One is less viscosity breakdown over time (which oil lubricates well for the longest) and frankly I can't remember the other point. Anyway, find the site and read it if you don't trust me. Mobile 1 (I buy it at Costco) is the one to use.

Royal Purple all the way!

The only true synthetic oils are Amsoil (my preference), Royal Purple, Redline, and Mobil 1. You can't go wrong with any of them and they kick the tar out of Dino oil. and are less expensive than Dino oil to use overall when you consider the extended drain intervals... Do your research

The only true synthetic oils are Amsoil (my preference), Royal Purple, Redline, and Mobil 1. You can't go wrong with any of them and they kick the tar out of Dino oil. and are less expensive than Dino oil to use overall when you consider the extended drain intervals... Do your research Can you provide me with some truly INDEPENDANT research? I'll give you some food for thought; I raced motocross for 27 years and came to know a lot of guys in the process. In 1997 a friend of mine (not Mike LaRocco) had a sponsorship deal with Amsoil. Got free product, cash, ran their logos and such, and one day we were at a race in Ok. and I watched his mechanic pouring Yamalube 2R in some gas and Silkolene in the trans! I asked him about this quietly and the mechanic stated that they had tried the Amsoil products and had experienced scuffed pistons and cluth slippage. Granted this is only one guys opinion (and I can't vouch for his intellegence level), but there are so many OPINIONS out there that some concrete comparisons between brands of oil would be interesting. The testing I am referring to would be provided by an INDEPENDANT source that has no ties to or was not hired by any oil company. This would indeed be interesting.

i use castrol 5w30 part synthetic.... made big difference in idle and accel

Royal Purple...Never turn back! Been running it in my Tacoma for a long time never had any problems. And Duh.......It fickin Purple

http://www.bobistheoilguy.com/ is the site I mentioned above. They have forums and stuff now. I didn't see what I was looking for right away, but if you're ACTUALLY looking for your real research, go browse. I can't vouch for the forums, but the articles and info on the left side bar is good stuff.

The only true synthetic oils are Amsoil (my preference), Royal Purple, Redline, and Mobil 1. You can't go wrong with any of them and they kick the tar out of Dino oil. and are less expensive than Dino oil to use overall when you consider the extended drain intervals... Do your research Can you provide me with some truly INDEPENDANT research? I'll give you some food for thought; I raced motocross for 27 years and came to know a lot of guys in the process. In 1997 a friend of mine (not Mike LaRocco) had a sponsorship deal with Amsoil. Got free product, cash, ran their logos and such, and one day we were at a race in Ok. and I watched his mechanic pouring Yamalube 2R in some gas and Silkolene in the trans! I asked him about this quietly and the mechanic stated that they had tried the Amsoil products and had experienced scuffed pistons and cluth slippage. Granted this is only one guys opinion (and I can't vouch for his intellegence level), but there are so many OPINIONS out there that some concrete comparisons between brands of oil would be interesting. The testing I am referring to would be provided by an INDEPENDANT source that has no ties to or was not hired by any oil company. This would indeed be interesting.
ok I would be happy to school you!
http://www.caranddriver.com/article.asp?section_id=27&article_id=3631&page_number=1
Read that first
then the science behind it
http://www.hatcocorporation.com/pages/about_esters.html
and finally here ia independant test study with actual lab test reults on the oils themselves during the study
http://neptune.spacebears.com/cars/stories/oil-life.html
Hope this helps.. as al information is provided by people who are not affiliated with any lubricant manufacturers

bump people should read this

Royal Purple....The only way to fly.

Royal Purple....The only way to fly.
It is in mine :D

I'll give you some food for thought; I raced motocross for 27 years and came to know a lot of guys in the process. In 1997 a friend of mine (not Mike LaRocco) had a sponsorship deal with Amsoil. Got free product, cash, ran their logos and such, and one day we were at a race in Ok. and I watched his mechanic pouring Yamalube 2R in some gas and Silkolene in the trans! I asked him about this quietly and the mechanic stated that they had tried the Amsoil products and had experienced scuffed pistons and cluth slippage

I'm not a fan of Amsoil, but it is quite a stretch to equate piston scuffing in a 2-stroke engine and clutch slippage in a wet clutch to any possible effect in a 4-stroke automobile engine with forced lubrication.

George

No intention to equate the two. The point was that while some of the "latest and greatest" products are marketed extremely well, they really don't solve any actual problems. The whole synthetic oil debate seems to me to be the ultimate solution to a non-existant problem, standard marketing fare. I personally use Quaker State 5-30 in my car because it's free. Do you really think my engine will wear out prematurely? Many specifications "measured at the brochure", don't actually pan out when measured in real life aplications.

I'll add in another vote for Royal Purple. I've personally built 3 400+whp RX-7's, and I've always used Royal Purple. It's a little more expensive, but it is the best oil on the market from what I have seen. I know Scion's aren't RX-7's, but they can't possibly be as delicate. Just my .02

Zach

I'll add in another vote for Royal Purple. I've personally built 3 400+whp RX-7's, and I've always used Royal Purple. It's a little more expensive, but it is the best oil on the market from what I have seen. I know Scion's aren't RX-7's, but they can't possibly be as delicate. Just my .02

Zach
and nothing like a few free ponies

Um... i've never used royal purple myself, but i have a REALLY hard time believing adding any sort of oil will add horsepower, especially over another synthetic. I don't think any oil can do anything more than protect your engine. A good oil protects it more in a wider range of conditions. But in any case....

less rolling resistance and friction causes horepower loss..read for yourself
http://www.royalpurple.com/arta/arta.html