what kind of oil do you use

[speedminded]

I use amsoil 5w-20

This is a good read on mobil 1

http://www.caranddriver.com/article....rticle_id=3631


more info:

synthetic oils were considered to be of a Group IV or V base stock (non-mineral stock) but in 1997 Castrol highly refined a mineral oil (this is called Group III, hydrocracked) and called it a synthetic, claiming that hydrocracked oil resembles nothing found in nature. ln response Exxon Mobil filed a complaint with the National Advertising Division (NAD) of the Council of Better Business Bureaus. The NAD decided that the evidence "constitutes a reasonable basis for the claim that Castrol Syntec, as currently formulated, is a synthetic motor oil". So Group III oils have been termed "full synthetics" for quite some time in the US. Keep in mind that Group III oils can not be called synthetic in Europe. Here is a good post I found on that oil forum: "I have known for a fact Mobil 1 has been mostly group III basestock as far back as NOV. 2004. And YES this includes the regular Mobil 1 and the EP formula also. Now I know people will ask who I work for, sorry I cant let that out, I have four mouths to feed and I wont jeopardize that. Let (me) make this clear I am not a Mobil hater and they are doing nothing illegal, thanks to Castrol group III is termed a full synthetic."

Now that being said, the man who actually analyzed and blew the whistle on the M1 formulation had this to say: "Using Group III is a smart move for a business and not really a betrayal. Oil companies are not selling a formula, they are selling a performance level, and are free to change the formulation anytime they please so long as their claims match the performance level they are selling. To my knowledge EM (Exxon Mobil) has never claimed that their synthetic oils have no Group III (I think many would disagree on this point), only that they are based on “synthetic” base oils including PAOs (Group IV). It would be foolish for a company to take such a definitive stand against a class of chemistry as it closes the door forever on them changing their minds or responding to market trends. The purists have inferred from their statements that they would never use a Group III, perhaps because they wanted to believe it, but EM did nothing wrong in my humble opinion. As for the price, value is determined by each buyer. I am willing to pay more for M1, not because of its composition, but because I respect their history, quality, and reputation. There is value in that name that I will shell out a few more bucks for, just as many people continue to buy the Castrol Group III synthetics."

The current formulation of Mobil 1 is a blend of Group III, IV and V base stocks. It is unclear whether or not this current formulation is superior or inferior to any previous formulations but what is clear is that the use of Group III base stock in Mobil 1 reduces cost. However, as we all know, there has been no reduction in the retail prices to reflect this... shocker.

Oil companies are looking for cheap ways out and still bank...

ahh, just saw your post. This is where I got my info from about 3 years ago...I continued to use mobil 1 though, lol.

[GTScoob]

Mobil 1 is trash. I hear the high mileage M1 is a lot better than the normal stuff but I wont ever use it again. Royal Purple is what was in my car when I spun a bearing, so again I would stay away from it; it breaks down very quickly, I've read too many oil analyses of 5w30 Royal Purple breaking down to 20wt sheer strength over time.

Redline is good but pricy and is not a full synthetic. Motul makes good oil too. Personally I'm running German Castrol 0w30 and my car seems a lot happier than with the Redline 10w40, especially on cold starts. I've got a couple friends running Shell Rotella T 5w40 with great success, its cheap, fully synthetic, and made for diesel motors so it lasts forever under strenuous conditions.

http://www.bobistheoilguy.com/ has good forums for researching other oils.
http://www.blackstone-labs.com/ offers oil analysis so you can see how well your oil is holding up, as well as what other contaminants have made it into your used oil.

[Andy_013]

I use Mobil 1 Fully Synthetic 5w-30.

[JDMjoe]

I use Mobil one and have used it in my last 2 cars. Used royal purple because i could get it cheaper through work but the price went up and started using mobil one lol. Royal purple did seem to break down really fast but no issues with mobil one thus far....

[green91]

i use mobil fossil oil 5w30.

[DecoyOctopus]

i use mobil fossil oil 5w30.

has anyone here tried that lucas racing oil? not the additive but the oil itself.

[green91]

honestly man i see so many cars come into work with 300k+ miles that still run like they are new, and havent ran synthetics, just regular fossil oil changes every 3-5k. even in my own vehicles i run regular old oil.

[.::UNKNOWN::.]

amsoil 0w-30 ftw cost a lil more but don't have to change it as often

[GTScoob]

honestly man i see so many cars come into work with 300k+ miles that still run like they are new, and havent ran synthetics, just regular fossil oil changes every 3-5k. even in my own vehicles i run regular old oil.

Castrol GTX is what I've run in other cars, I just feel that the extra wear and tear on oil caused by a turbo motor warrants a synthetic. Get your oil tested at blackstone and they'll tell you how long it should last, most synthetics will last upwards of 7K miles according to their analysis results.

[green91]

you guys do realize the reason you change your oil isn't because the oil breaks down after 3-5k right? yes synthetics last longer. but the reason for oil changes is because of the carbon contamination due to the combustion process getting into the oil. hence why oil gets darker. synthetics and fossil oils alike suffer this same fate.. so those of you who run synthetics to extend your oil change intervals may actually be doing more harm than good.

[blackshine007]

you guys do realize the reason you change your oil isn't because the oil breaks down after 3-5k right? yes synthetics last longer. but the reason for oil changes is because of the carbon contamination due to the combustion process getting into the oil. hence why oil gets darker. synthetics and fossil oils alike suffer this same fate.. so those of you who run synthetics to extend your oil change intervals may actually be doing more harm than good.

Great point to mention that. If any of ya'll do decide to go longer between oil changes, make sure that royal purple isn't in your crank case. I personally think that it's highly overpriced. I found out that Shell Rotella has zinc in it and I was convinced that (well after my buddy ran it in his turbo car without any problems) it would do well in my vehicles. Shell Rotella 15w40 FTW

[GTScoob]

Great point to mention that. If any of ya'll do decide to go longer between oil changes, make sure that royal purple isn't in your crank case. I personally think that it's highly overpriced. I found out that Shell Rotella has zinc in it and I was convinced that (well after my buddy ran it in his turbo car without any problems) it would do well in my vehicles. Shell Rotella 15w40 FTW

Go with the Rotella T 5w40 (as opposed to the normal Rotella). Its indestructable.

you guys do realize the reason you change your oil isn't because the oil breaks down after 3-5k right? yes synthetics last longer. but the reason for oil changes is because of the carbon contamination due to the combustion process getting into the oil. hence why oil gets darker. synthetics and fossil oils alike suffer this same fate.. so those of you who run synthetics to extend your oil change intervals may actually be doing more harm than good.

Yep, thats why I keep advocating getting your oil analyzed. Not only will it tell you what the actual viscosity of the oil is but it will also tell you the flash point as well as what trace metals or chemicals are in your oil. It costs $22.50 but is worth so much more than that.

[sogood]

10w40 Royal Purple synthetic.

I used to run 5w30 Mobil 1 synthetic, but didn't really like it as much.

[NevrNufTorq]

Go with the Rotella T 5w40 (as opposed to the normal Rotella). Its indestructable.


Yep, thats why I keep advocating getting your oil analyzed. Not only will it tell you what the actual viscosity of the oil is but it will also tell you the flash point as well as what trace metals or chemicals are in your oil. It costs $22.50 but is worth so much more than that.

whatup bro?!? how's life treatn ya? just wondering on the diff between rotella and the t version. dont know if i've ever seen the t version or if i've looked to be honest?!?!? ty latr