Cadillac CTS-V 2004-2007 (Gen I) The Caddy with an Attitude...

Fluid change

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Old 03-21-2014, 10:54 AM
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Default Fluid change

I'm going to swap out my fluids in the next week or so and was looking for consensus opinons on the "best" fluids.

engine oil?
Transmission fluid?
Rear diff fluid?

I figured just using the Mobil 1, as factory recommended. Also, this is the first car that I've had that used an oil life indicator. Do most of you change based on that, or still do regular monthly/mileage intervals? Car is driven maybe 7-10 times a month, mostly babied, just highway.
Old 03-21-2014, 11:17 AM
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Originally Posted by mild83
I'm going to swap out my fluids in the next week or so and was looking for consensus opinons on the "best" fluids.

engine oil?
Transmission fluid?
Rear diff fluid?

I figured just using the Mobil 1, as factory recommended. Also, this is the first car that I've had that used an oil life indicator. Do most of you change based on that, or still do regular monthly/mileage intervals? Car is driven maybe 7-10 times a month, mostly babied, just highway.
If it's not driven that much I'd go more by time intervals not miles for oil changes. Like every 6 months or something reasonable.
Old 03-21-2014, 12:18 PM
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I go by the monitor and use Mobil1 for motor as the monitor is designed for it. Redline oils are working superb in all temps for me in the tranny and diff.
Old 04-02-2014, 02:35 AM
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-Radiator: Caltex 33/67
Radiator additive DEI RAD RELIEF
-Engine oil: Mobile 1 Fully Syn 10w50
-Transmission Dexron 6
-Diff oil Full syn valvoline 75w90
Old 04-02-2014, 06:14 AM
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Rotella T 10W-30 for engine oil. Mobil 1 has changed due to emission standards along with Royal Purple. I wouldn't put either of those in a lawn mower. Redline fluid for rear diff and transmission.
Old 04-02-2014, 01:18 PM
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I run amsoil oil/filter in my motor, car gets driven less than 3k a year so I just change every fall before storing. I plan on doing redline in the trans and diff like some of the guys here already do, always hear good things about it.
Old 04-02-2014, 01:23 PM
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amsoil in everything but engine.
Old 04-02-2014, 01:54 PM
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I use mobil 1 0w40 because it still carries the API SN rating and has the higher zinc and phosphorus. Redline in the diff and I plan on redline in the tranny later this summer. I may consider switching to redline for the motor if the price was better.
Old 04-02-2014, 03:29 PM
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i run rotella cause i'm cheap. and it's good stuff.
Old 04-02-2014, 03:42 PM
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same here for the rotella in the engine
Old 04-02-2014, 09:03 PM
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Mobil 1 5w-30 in engine.
Prestone green coolant roughly 50/50
Trans fluid; redline mtf 3qts and redline 75-90w
Diff; redline 75-140



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