Amsoil 0W30 or 5W30 for new Pontiac G8 GT?

Status
Not open for further replies.
Joined
Feb 12, 2003
Messages
33
Location
Scottsdale, AZ
Acquired a new Pontiac G8 GT with the L76 6.0L engine, LSx based and am wondering what would be best for extended oil change intervals? Any help would be appreciated, thanks!


Sean
 
Originally Posted By: sprintman
What do you think of the car?



Very Nice
thumbsup2.gif
 
Was in the factory where they machined the front and rear suspension "uprights" for your car mid last week.

If every other component is treated the same as those, you've got a good deal (and cheaper than Aussies pay for the home grown thing)
 
Originally Posted By: 9c1lt1
Originally Posted By: Pablo
SSO for sure



Exactly what I was thinking Pablo, will this be fine in the Arizona heat?



You mean because of the 0W? Or because it's a 30? 0W is just it's rated flow at cold temps. The car calls for a 30 so it will be fine.
 
Hi,
I would be wary of using other than M1 10W-30 in this engine.
Use UOAs if you wish to use it to the maximum OCI - this lubricant has official GM Approval and performs very well in temperatures up to 50C+ in these engines

Lubricants with a very high TBN (such as Amsoil SSO) may not a desirable lubricant for this engine
 
Last edited:
Originally Posted By: Doug Hillary

Lubricants with a very high TBN (such as Amsoil SSO) may not a desirable lubricant for this engine


Can you please explain why. Thanks.
 
Doug,

Off topic from this post, but looking at you signature, was wondering why you use Castrol R4 Superbike oil instead of one the fine Mobil 1 motorcycle oils.

Sorry to get off topic.
 
i know its a different engine, but i have had really great results from using mobil 1 in my lt1. I started off with 10w30 but then switched to 40w and did an amsoil flush at 100k

I dont have UOA to prove on paper its done well, but to have 130k on the engine should be proof enough. I put a bigger cam in it at 128k and from what i could see the internals were good to go. Before the cam I was spraying it and beating on the car on a daily basis as my daily driver for 10years. With the cam i have been spinning to a bit over 6500rpms. So trust me this car was not babied.

If you plan on taking this car to the track and driving it hard i would just simply stay with mobil 1 sine it's readily available. That's just my opinion, no science to it though.
 
Hi,
Johnny - You said;
"Off topic from this post, but looking at you signature, was wondering why you use Castrol R4 Superbike oil instead of one the fine Mobil 1 motorcycle oils."

An OT reply:
As you may be aware I always use what I think is the best lubricant for the task after careful analysis. The Brand and price matters little to me - performance does

The Castrol R4 Superbike 5W-40 does not have an equivalent lubricant in the Mobil range. I actually drained out the excellent Shell Advance Ultra 4 10W-40 used by the dealer. I liked the better viscosities (cold/hot & HTHS vis.)and the better availability of Castrol R4 here in the Tropics.
As well, the Burgman has the same lubricant in the gearbox (another factor with the viscosities) and I put Castrol's excellent Syntrax 75W-90 (GL5) in the geared drive line

The Castrol products are more expensive than their competitors products

Both of my youngest sons use the Shell lubricants in their many "hot" Suzuki and Honda Sports bikes

In my previous BMW R100RS I used GC 0W-30 and Syntrax too

As a youngster my family used to race Nortons, Triumphs, AJS and Matchless bikes - they all used Castrol R 30 and R40 (castor base synthetic). So a little tradition for me too I expect

As an aside, I also had connections to Bert Munroe who raced "The Worlds Fastest Indian" - a DVD to watch and enjoy even if you don't like bikes!
 
OK....now we have me confused again. Why would an oil, any brand, with a high base number not be good for the Pontiac or any car. I thought a high base number was a very desirable attribute.

Also, if it meets GM 4718M, doesn't that mean low and or acceptable Sulfated Ash levels? Question only as I honestly do not know.
 
Last edited:
To answer your question about Amsoil SSO handling the Arizona heat, Yes it will be a fine oil. I use it in one of my toyota work trucks (2006 tacoma Off Road) and its been great. I gained about 2 MPG when I switched from another synthetic. Although it does get hot here in AZ I see no issues with any oil for that matter, synthetic or dino as long as your OCI's are appropriate. I like SSO so far. You should disregard what others have said against it and give it a try. If anything it would be overkill which to me is only a good thing if im going to keep the vehicle for any significant amount of time.
 
Status
Not open for further replies.
Back
Top Bottom