View Poll Results: What Oil?
Multiple Choice Poll. Voters: 145. You may not vote on this poll
Which Oil
Thread Starter
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From: Kaneohe, Hawaii
Which Oil Sup fellas, recently hit 45k on the odometer. I'm going to do the recommended maintanence, but I'm considering changing oils. I've tried for a while to obtain the German Castrol, but it just isn't available in Hawaii, and I have tried buying from members here, but shipping pretty much makes it ridiculous. So, here are my options:
Stay with Mobil1 5w-30
Switch to Mobil1 0w-40
Switch to Redline 5w-30 or 0w-40
Switch to Royal Purple 5w-30 or 0w-40
Switch to Amsoil 5w-30 or 0w-40
I'm actually leaning more towards 0w-40 since temps here hardly drop below 70 degrees, but let me know what you think.
Stay with Mobil1 5w-30
Switch to Mobil1 0w-40
Switch to Redline 5w-30 or 0w-40
Switch to Royal Purple 5w-30 or 0w-40
Switch to Amsoil 5w-30 or 0w-40
I'm actually leaning more towards 0w-40 since temps here hardly drop below 70 degrees, but let me know what you think.
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Thread Starter
TECH Fanatic
iTrader: (3)
Joined: Oct 2003
Posts: 1,645
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From: Kaneohe, Hawaii
Thanks Patman, I was wondering about it when I was walking through the store. Just remind everyone, I appreciate your feedback, I only WISH German Castrol was available in Hawaii
Originally Posted by Lethal_Ws6
why do you guys use 0-40 or 5-40 or even 10-40 .... ?? i use royal purple 5w-30.
Whats the difference in grade ??
Whats the difference in grade ??
Since it never gets below 70 there is no need for a 0w product the first number of 0w30 for example is what the consistency flows like on a cold engine. The lower the number the closer to water like flow it is the higher the closer to honey.
In your climate a 15w45 or 15w50 would be fine also remember the larger the variance in the digits i.e. 0w20 vs. 0w50 the larger amount of additives are in the oil to create the viscosity changes, which isnt always a good thing. I personally run a 0w-30 Mobil one from October to March since it is colder then a 10w40 in the warmer months Apr-Sept.
The manufacturer recommends this 5w30 because it is more emissions friendly and in the beginning of the motors life the engine is tighter than it is after time.
IMHO just my .02
In your climate a 15w45 or 15w50 would be fine also remember the larger the variance in the digits i.e. 0w20 vs. 0w50 the larger amount of additives are in the oil to create the viscosity changes, which isnt always a good thing. I personally run a 0w-30 Mobil one from October to March since it is colder then a 10w40 in the warmer months Apr-Sept.
The manufacturer recommends this 5w30 because it is more emissions friendly and in the beginning of the motors life the engine is tighter than it is after time.
IMHO just my .02
Last edited by Topless TA; Jul 7, 2006 at 09:38 AM. Reason: .
Originally Posted by Shatterz
If 5W-30 is way too thin for the LS1 then why does GM recommend it in the owners manual ?
I'd say Mobil 1 5W-30 is your best bet
I'd say Mobil 1 5W-30 is your best bet
I live just off the coast in southeast texas... and i've always preferred dino oil. I ran dino 10w30 in my stock shotblock motor for 4 years until a nitrous backfire took out a piston. I now run dino 10w40 in my 408. I'm just not into the synthetic hype.
Originally Posted by Shatterz
If 5W-30 is way too thin for the LS1 then why does GM recommend it in the owners manual ?
As said above not all oils are created equal. The LS1 likes a TRUE 30 weight oil at temperature. They even like oils more towards 40 weight. Oils like M1 5W-30 and Royal Purple 5W-30 are closer to 20 weight oils than 30 at temperature according to oil test results I've seen.
RP 5w-30 I personally would NEVER use in any car again as I bought some planning to use it in my Z and found this site before using it. Not to waste it I used it in my wife’s car. Oil pressure dropped right away and after a couple of hundred miles I changed it out and oil pressure rose again.
Originally Posted by Shatterz
I'd say Mobil 1 5W-30 is your best bet
I don't mean to be a dick about this and this is not just directed at you but I keep seeing this same suggestion over and over again and it's really not based on any tests. M1 5W-30 is probably a good oil in a lot of cars just not the LS1. It's your car so use whatever oil you want but a lot of new people come here to find out the best oil for their LSx car and they would read through some of these oil threads and think M1 5W-30 is the best oil and they would be wrong.
Last edited by Mike02Z; Jul 8, 2006 at 09:02 PM.
Originally Posted by Topless TA
Since it never gets below 70 there is no need for a 0w product the first number of 0w30 for example is what the consistency flows like on a cold engine. The lower the number the closer to water like flow it is the higher the closer to honey.
In your climate a 15w45 or 15w50 would be fine also remember the larger the variance in the digits i.e. 0w20 vs. 0w50 the larger amount of additives are in the oil to create the viscosity changes, which isnt always a good thing. I personally run a 0w-30 Mobil one from October to March since it is colder then a 10w40 in the warmer months Apr-Sept.
The manufacturer recommends this 5w30 because it is more emissions friendly and in the beginning of the motors life the engine is tighter than it is after time.
IMHO just my .02
In your climate a 15w45 or 15w50 would be fine also remember the larger the variance in the digits i.e. 0w20 vs. 0w50 the larger amount of additives are in the oil to create the viscosity changes, which isnt always a good thing. I personally run a 0w-30 Mobil one from October to March since it is colder then a 10w40 in the warmer months Apr-Sept.
The manufacturer recommends this 5w30 because it is more emissions friendly and in the beginning of the motors life the engine is tighter than it is after time.
IMHO just my .02