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Discussion Starter #1
I just recently purchased my newly acquired baby. I was wondering what is the BEST oil to put in. I am due for an oil change and want to know what is the best? I have heard certain oils are bad for the Northstar? please fill me in thanks :confused:
 

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I bought my caddy from my brother and have since changed the oil to mobil 1.....ran it in all my hot rod engines before and a noticeable difference in the caddy cold start up.......136000 on the cad bullit...a believer.
 

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Redline oil is the best in my opinion.. Of course it's expensive as hell. $8/qt but it's the best.. I use it in my caddy 10W-30.. Or i would try the royal purple next it's a little cheaper and then mobile 1 below that it's in a good price range.. It all depends on the $ you have.. You can call up redline and ask them why their oil is better :) or check out http://www.redlineoil.com/whyredline.htm It also gives you a little more horsepower to use good synthetic oil , i think maybe 5-10HP can be gained by using it on the 300HP 4.6L. I use redline d4 atf also.
 

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2005 CTS-V, 1994 Infiniti Q45
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Remeber guys..... TYPE OF OIL IS MUCH LESS IMPORTANT THAT FREQUENCY OF CHANGING...... Personally, I like synthetic (im a valvoline fan, IMO equal to M1 and a wee cheaper).... Its just overall cleaner than dino...... I know everyone has a pro and con about it, but I like syn....

Also, when using synthetic, use a thicker grade than if you were using dino!
 

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2001 Cadillac STS
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elwesso said:
Remeber guys..... TYPE OF OIL IS MUCH LESS IMPORTANT THAT FREQUENCY OF CHANGING...... Personally, I like synthetic (im a valvoline fan, IMO equal to M1 and a wee cheaper).... Its just overall cleaner than dino...... I know everyone has a pro and con about it, but I like syn....

Also, when using synthetic, use a thicker grade than if you were using dino!
Im doing an oil change tomorrow before winter in my caddy. my dad buys quaker state 10W-30, but i dont know how much of a difference 5W-30 would make during cold starting. Anyone swiitch oils in different seasons, and is there a big difference??
 

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94 ETC,97 STS
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There is a difference between the grades. You don't say where you are. If it's going to get down to 0 go with the 5w-20.
Most cars suffer a lot more damage from cold starts with a thick oil than from anything else. There is a lot of info on the net about oils but the basics are buy good oil, change it reasonably often, and use the lightest possible.
 

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Discussion Starter #8
I just changed my oil the other day and bought some quaker state synthetic 10w-30 the kind for high horsepowered engines since im running 300hp.
 

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2006 STS V8 Blackberry,2004 CTS 3.6 Loaded, 2016 SRX LOADED
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1. Synthetics reduce wear of an engine.
2. A drop in engine operating temperatures.
3. Exceptional viscosity flow.
4. Better circulation and cooling in an engine.
5. Film strength over 2,000 psi.
6. Thermal Stability at high temperatures.
7. A cleaner engine.

I think it is one of the greatest engineering
developments of the century.
 
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