mlb585

Hey everyone. The 2003 CLS I recently bought has aboutt 11k on the car. I decided that I want to change it over to synthetic. I have ready MANY of the previous posts here about oils and there is a lot of good info. BUT, I live in florida, and I want an oil that will protect in the hot weather but also an oil that will still give good performance. I used Mobil1 on my previous cars but they don't make the correct formula (5w-20) for my car. That is why I am considering Amsoil. I know both are superior oils and some the Amsoil is better. What I am asking is that is it better to have the correct weight/weather formula that is required to put in your car (I know they changed the oil for the 2003 CLS), or to put a slightly thicker oil that might protect better than thinner oil eventhough they're both synthetics?

anothercls

I have read all over the place people are using 5w-30 or 10w-30 in the mobil1. Mobil1 specifically says for "Honda and Ford applications" on the 0w-20 bottles, which is what I use.

PavDog

The 0w is for the CAFE standards.. don't use it. I have used both Amsoil and M1.. Both are equivalent, imo. My recommendation is to get the gallon jug from WalMart, in 5W-30 and run that. The key is to get a good filter.. I use the oversized Mobil 1 one, and there's others that are good as well. I think Purolator makes a good one too.. There's an oil filter FAQ--check it out.

In my opinion the Amsoil is decent but isn't that much better than Mobil1 to warrant the incovenience of buying a reseller account, ordering it online, paying shipping, waiting, etc.

fender4

Amsoil is big on extended drain intervals,,, change filter every 5k and by analysis you will find amsoil will last over 15k miles... if you want to change oil and filter every 5k use moble1. I have built up confidence in amsoil products only after many lab tests.. I use 0w30 and change oil every 10k miles (5k on filter).. this is still very early in the oils life.. much emotions on this subject exists. Also there are many people like myself who sell amsoil out of our trunks at a little above wholesale just to cover all costs,,, ask around in your town they are out out there.

Dan

Mobil 1 works well for entended drain times also. My 1985 Toyota MR-2 only had a oil/filter change every 10,000 miles with Mobil 1 and the Toyota factory filter. The last time I had the cam covers off to check valve lash was at 180,000 miles and the interior of the cam covers and top of the head were absoultly clean. At that time the engine was using only 1/2 quart of oil between oil changes! Now that my 2001 CL-S is out of warranty, I will be switching to a 10,000 mile oil/filter change schedule on it also.

mlb585

Sounds like i'm gonna go with Mobil 1 5w-30....as for the oil filter. I looked at the Mobil 1 filter for my car and it is tiny!! I know that everyone says to go with the M1-105 instead of the 104. Well, I looked at both of them and the 105 looks wider but it's not really taller. Am I looking at the right one? Also I looked inside and there is a spring mechanism that is visible in the 104 but the 105 doesn't have one. Can anyone shed some light on this?

fender4

I Agree with you, mobil1 can be used for extended drain intervals,,, data that I have found wants filters to be changed at 5k. My personal research have found new mobil1 to have a TBN of 8 and some tests show it to be a 12. Mobil1 has stated on their containers to change every 3k miles ???? Don't know if it still says that. Amsoil has always stated 25k plus changes and have research to prove it. Also Amsoil has always tested over 12 TBN. Between mobil amsoil castrol pensoil is like picking grades of diamonds,,, all are very good. Just change the filter.

EricL

When I can get the Amsoil delivered without offering a stack of Krugerrands,
or pick it up at the same stores I get the Mobil-1, I'll be changing my tune…

Bluto

I ran both in my car, did an oil analysis on each.

Mobil 1 sucks.

paulff3

I read many post on this and talked to my tech at the dealer. I went with M1 in 5w-30. I would suggest the Fram X2 filter, too.

sushimaster

My friend told me that many people across different boards have complained that Mobil 1 is not a true synthetic oil compared to the rest of the market. Can anyone else verify this ?

NiteQwill

Yes, as of 2002, they added another bond to the formula that doesn't make it a "true" synthetic. Better or worse: who knows? unless you do an oil analysis of pre-2002 vs current.

I personally use 0w-30 Mobil1 with a Wix filter. Wix filters IMHO provide the best filtering I have ever seen. I may switch to 5w in the future due to global warming .

paulff3

From Mobil1.com


What is Mobil 1 and why is it now called Mobil 1 with SuperSyn™?

Mobil 1 is a fully synthetic motor oil for automotive engines. It is made from a unique combination of high-performance fluids, including polyalphaolefin (PAO), plus the SuperSyn™ anti-wear system for protection under the most extreme use. Mobil 1 with SuperSyn™ is available in five viscosity grades:

NiteQwill

A good read: http://neptune.spacebears.com/cars/s.../oil-life.html

and

http://neptune.spacebears.com/cars/stories/mobil1.html 18,000 miles on Mobil1

mlb585

Can anyone help me out with what I was asking about filter here?

Dan

Spring assembly is part of the anti-drain back valve. The 105 does not have this feature.

fender4

old but still current

http://www.ntpog.org/reviews/filters/filters.shtml

http://www.unofficialbmw.com/all/misc/all_oilfaq.html

and if you like reading

http://www.synlube.com/synthetic.htm


Amsoil responce to mobil stating nothing is better,,, note the low tbn number

http://www.amsoil.com/performancetes..._vs_mobil1.htm

let the oil wars continue

Joe5.0

What is the benefit of using the M1-105 over the manual recommened size of 104?

And I use Mobil drive clean 5w-20 and change it every 3750 miles just like the manual states. In Michigan we have a wide range of temperature changes, even in one season, so an extended interval isnt the best idea due to condensation buildup.

fender4

synthetic oil is ok over temp ranges,,, the filter is what needs to be changed every 5k. miles.

Amsoil is based out of Duluth MN. A lot of extream temps there.

EricL

Well let me extend a compliment and then a quck jab...


Senor Fendór,

While I actually do like what Amsoil is doing in the engineering arena, I've commented about marketing "funnies" that they do. Here is an example of something that has nothing to do with the fine oil they make, but I keep talking to people that wonder about stuff like this:



Personally, I find this insulting to my intelligence. (The difference between the two looks to be twice as great if you just take a casual glance at the length of the bars).

The bar graph trick is getting pretty old. What's next? Showing a 2-foot long bar if the change in pour-point temperature is 0.25 degrees F.



Engineering excellence combined with some kind of deep-seated insecurity perhaps?

Bluto

85% of the population wouldn't notice the scale. U R a SSSSSsSuper Genius.
j/k



Some of their stuff is just marketing. However Mobil 1's 'factory fill' is the biggest load of marketing/advertising BS I've ever seen. I did the analysis in my car, Mobil 1 showed 3 times more wear. AMSOil and the local shop get my $$$. (and I think AMS is made in the USA?)

SpeedyV6

http://www.ntpog.org/reviews/filters/filters.shtml

sushimaster

and if you like reading

http://www.synlube.com/synthetic.htm


Holy cow, does anyone ever use Synlube Lube4Life in their cars ?

fender4

[QUOTE=EricL]Well let me extend a compliment and then a quck jab...


Senor Fendór,

While I actually do like what Amsoil is doing in the engineering arena, I've commented about marketing "funnies" that they do. Here is an example of something that has nothing to do with the fine oil they make, but I keep talking to people that wonder about stuff like this:


Personally, I find this insulting to my intelligence. (The difference between the two looks to be twice as great if you just take a casual glance at the length of the bars).

The bar graph trick is getting pretty old. What's next? Showing a 2-foot long bar if the change in pour-point temperature is 0.25 degrees F.

...............


I agree and wish they would pull this temp chart,,, what has me concerned is the TBN number in the "8"'s I have seen mobil1 in the 12's ,,, mobil is somehow decontent quality thru manufacturing,,, this is bs from mobil. also amsoil is fighting the battle of mobil claiming they are the best. By which tests I don't know but they are very good marketeers,,, again when it comes to advertising anything goes,, science is out the window..