LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related
View Poll Results: Which oil?
Catrol GTX
19
10.92%
Quaker State
5
2.87%
havoline
1
0.57%
valvoline
19
10.92%
penzoil (****ty oil)
6
3.45%
Mobile 1 synthetic
103
59.20%
Other synthetic
15
8.62%
other...
6
3.45%
Voters: 174. You may not vote on this poll

Which motor oil?

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Old 06-27-2003, 10:54 PM
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Which motor oil?

What motor oil do you guys use? I use either Quaker State or Castrol GTX....Just curious...
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Old 06-28-2003, 12:18 AM
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I would cry if anything other than Castrol got in there...

Castrol GTX
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Old 06-28-2003, 12:19 AM
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mobil 1 synthetic
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Old 06-28-2003, 12:25 AM
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what about redline or royal purple?
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Old 06-28-2003, 12:29 AM
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QUAKER STATE SEMI SYNTHIC 20W50
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Old 06-28-2003, 01:50 AM
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Even thought it`s not listed i am a firm belever in Amsoil synthic oil`s
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Old 06-28-2003, 02:04 AM
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Mobil 1 synth

133,000 hard miles and still running very strong!!
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Old 06-28-2003, 03:31 AM
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The Royal Purple motor oil to me works the best, it will make the motor smoother and it reves faster , also no carbon build up on the throttle body.
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Old 06-28-2003, 04:32 AM
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Originally posted by lt1coz
The Royal Purple motor oil to me works the best, it will make the motor smoother and it reves faster , also no carbon build up on the throttle body.
Screw that expensive stuff. My intake is caaaleeeann
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Old 06-28-2003, 05:22 AM
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I'm running Schaeffer Supreme 5w30 in my Firebird, Royal Purple 5w30 in my wife's car, Castrol Formula SLX 0w30 (from Germany) in my sister's car, and GTX High Mileage 5w30 in my mom's.

What's with the comment about Pennzoil in the poll? Pennzoil is a good oil. Don't believe all those old wive's tales you hear from old mechanics about how Pennzoil or Quaker State causes sludge.
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Old 06-28-2003, 05:24 AM
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Thumbs up

Mob1/Wix.
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Old 06-28-2003, 06:29 AM
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Mobil 1, naturally.
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Old 06-28-2003, 08:10 AM
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Originally posted by Patman
I'm running Schaeffer Supreme 5w30 in my Firebird, Royal Purple 5w30 in my wife's car, Castrol Formula SLX 0w30 (from Germany) in my sister's car, and GTX High Mileage 5w30 in my mom's.

What's with the comment about Pennzoil in the poll? Pennzoil is a good oil. Don't believe all those old wive's tales you hear from old mechanics about how Pennzoil or Quaker State causes sludge.
I've never had a problem with quaker state, although my mechanic doesn't recommend penzoil because of the slugde problem, so I decided to check it out. Sure enough after about 2500 miles it does start getting kinda thick. My grandparents used to run penzoil, I asked them if I could change their oil on their cars once. I changed one at 3000 miles (not much difference) changed the other at 5000 miles and at 5000 miles it was pretty nasty. I've never heard a bad thing about quaker state, never had problems with it either...I did hear castrol casued problems with spun bearings, however, the PD here in OKC uses castrol GTX and they don't seem to have problems so I am a believer in it.
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Old 06-28-2003, 03:49 PM
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ttt
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Old 06-28-2003, 07:38 PM
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I use Shaeffer Supreme 5W30 too.
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