For those of you who don't want to read any further, here's the info:

AMSOIL Synthetic 10W30 Turbo Formulated Motor Oil (ATM)

The full spec, and ordering info can be found on their web page(see photo I added at the bottom of this post)

http://www.amsoil.com/products/atm.html

You call, give them your credit card number, and the oil arrives at your office a few days later. You don't even have to drive to WalMart !



For those of you who want more info...............the following is posted for your reading enjoyment, in the hopes that this helps in some way with your oil selection.

regards,

Mr. P








XC90 oil recommendation (UPDATED with photo and specs)


Hi guys and gals,

Greetings from Nashville, TN, "Music City, USA"......

A while back I posted a note saying "I couldn't comment until I did my homework", and now since the homework is done I want to post it for everyone, in order to give you some info you may choose to use in making an informed selection to suit your own driving habits, etc.

I plan to break in my new XC90 according to the manufacturers recommendation. I do, however, take note in the owners manual where it says they generally, in so many words or less, "recommend Castrol" but will fill the sump with synthetic if the customer specifies it, at extra cost.

Then..........in another section called "cold weather driving", they actually come out and "recommend" synthetic oil. I don't know why Volvo is waffling, but everyone these days knows synthetic oil is best, period. No argument.

Therefore, I decided to send a note to Amsoil tech guys and see what they recommend for a new turbocharged Volvo. Amsoil, for anyone who doesn't know, is the first US firm to build a synthetic oil, they are not the largest, but they generally are accepted as making the best.

Since I'm an architect well acquainted with reading (and writing) technical specifications, and also a collector of Porsches and antique boats, I was very interested in their recommendation for the XC90.


Here is my original post to AMSOIL below, and the reply should be self explanatory. I offer this informationf "for whatever it's worth". Personally, I think it's worth a lot:


(NOTE: this thread reads from "oldest post, to newest post at the end". The XC90-specific recommendation is at the end of this post. Happy reading! There will be a pop quiz in the morning)


=============================


I have three older water cooled Porsche's, presently running Amsoil products, but I want to be sure I'm using the proper (or best) product:

1983 928S 5-speed freshly rebuilt transaxle, 120,000 miles

1984 944 5-speed transaxle, 165,000 miles

1990 944 S2 5-speed transaxle, 88,000 miles

All three cars share the aluminum piston bore, with high silicon content, and all are running in good condition. I am using Series 2000 20W50 in the 928 V8, and will soon go to the Series 2000 75W90 gear lube. The Series 2000 75W90 gear lube made a huge difference in the worn transaxle on the '84 944 with 165,000 miles, it now shifts into second gear much better, and it is more quiet.

QUESTIONS:

1. Is the 20W50 "too thick" for the cars? I like the cold flow of the selection, but I notice your recommendations don't include this oil.

2. With a freshly rebuilt 928 transaxle, would it be better to use the Series 2000 75W90 gear lube, or the Series 2000 75W140 gear lube?

3. With the high milage 944, what is the best oil recommendation, and should I go "up" to the 75W140 gear lube in that transaxle. This particular gets a puff of smoke upon startup if it sits for a week or two, I suspect I'm getting some seepage at valve stems, which is of little concern to me. The transaxle was giving a little noise, some whine, a small "rattle" and difficult shifting when cold to second gear; the Series 2000 75W90 generally fixed this, but I am wondering if I should go to the 75W140. What is the motor oil recommendation for this situation too.

Since the 1990 S2 has relatively low milage, I'm interested in your comments for this car too. It runs and drives "like new" and I want to keep it that way.

Sincerely, and regards, P




From: Mail TechService [mailto:tech@amsoil.com]
Sent: Friday, May 28, 2004 2:01 PM
To: P
Subject: RE: Technical Service Contact Form


To: P

From: AMSOIL Technical Services


Thanks for contacting AMSOIL with your concerns.


In response to your inquiry, the Porsche engines are actually very flexible as to viscosity. I think the 20W50 viscosity is excellent for these engines – especially the older ones. It’d best to stay with the 90 grade gear lube though unless we’re dealing with a high wear situation.


Thank you again for the opportunity to respond to your concerns. As always, please feel free to contact us again if we can be of further assistance.


Sincerely,
AMSOIL Technical Services






Email:
Date: Thursday, June 10, 2004 at 17:47:23
-------------------------------------------------------
1: feedback.setup
Name: Mr. P
Zip: 37205
Email:
Comments: Hello.
I recently inquired about some older model Porsches and got a nice response, so thank you kindly.
I just bought a new Volvo XC90, with their turbocharged 5- cylinder motor. I plan to break-in the car according to the dealer recommendations, and then switch to Amsoil and go on the oil analysis program, as we intend to keep this one for a long time.
I am interested in the best oil recommendation for a turbocharged car of this type. It has 208-hp, and we may elect to have the ECU reprogrammed for some additional power (up to 245, with boost changed from 8 to 14-psi) in the event it is needed for occasional passing and safety reasons, not for hot rodding.
Sincerely, Mr. P
I am a customer: checkbox


________________________________________
From: Mail TechService [mailto:tech@amsoil.com]
Sent: Friday, June 11, 2004 8:31 AM
To: Mr. P
Subject: RE: Technical Service Contact Form
To: Mr. P
From: AMSOIL Technical Services
Thanks for contacting AMSOIL with your concerns.
In response to your inquiry, our top pick for this application is our AMSOIL Synthetic 10W30 Turbo Formulated Motor Oil (ATM).
Thank you again for the opportunity to respond to your concerns. As always, please feel free to contact us again if we can be of further assistance.
Sincerely,
Jim Van
AMSOIL Technical Services
Every attempt has been made to ensure the information provided in this e-mail correspondence is accurate and reliable. However, AMSOIL INC. makes no warranty, guaranty or promise (express or implied) concerning the content or accuracy of our e-mail response, as it is based solely upon the information provided to us by the e-mail sender.
-----Original Message-----
From: mailconfirm@amsoil.com [mailto:mailconfirm@amsoil.com]
Sent: Thursday, June 10, 2004 5:47 PM
To: Mail TechService
Subject: Technical Service Contact Form









So now, having done the homework, I’m recommending this product for the XC90, and I plan to use it myself. I had a turbo failure in the past and I believe it was due to running Castrol 20W50, which was “too thick” to begin with, perhaps, and also not a synthetic. Therefore, I go with Amsoil on this one.

Regards, Mr. P


http://www.amsoil.com/products/atm.html


__________________
Nashville, TN

2004 Volvo 2.5T AWD XC90, Ash Gold, Taupe, 7-seat

1990 Porsche 944 S2 Cabriolet
1989 Volvo 740 GL 16-valve
1984 Porsche 944
1983 Porsche 928S 5-speed
1974 TVR 2500-M
1966 38' Chris Craft, twin 427 Fords
1956 17' Chris Craft, SBC
--
2004 XC90 2.5T AWD, 1990 944 S2 Cabriolet, 1989 740 GL 16v, 1984 944, 1983 928S 5-speed, 1974 TVR 2500M