What weight oil, 5w-30 or 10w-30?
03-29-2006, 11:20 PM
#2
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Join Date: Apr 2003
Location: Pgh, PA
Posts: 2,628
Re: What weight oil, 5w-30 or 10w-30?
A 30 weight oil is almost too thin for an LT1. Alot of people have suggested runnin a 10W40. However, going with a 30 weight difference, the oil begins to loose its lubricating properties. 20W40 MAY be a nice summer oil. MAY ...
I just use Mobil 5W30. And it has always looked like brand new when I pulled the valve covers off and such.
I just use Mobil 5W30. And it has always looked like brand new when I pulled the valve covers off and such.
03-29-2006, 11:31 PM
#4
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Join Date: Sep 2005
Location: Bensalem, PA
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Re: What weight oil, 5w-30 or 10w-30?
I'm all for Royal Purple 10w30. RP 20w50 would be even better if you wanna let it warm up every morning..
So far so good I've been using it for a while and it's been clean and I did notice a small oil pressure increase 5-10psi when I switched. Whatever you do, make sure its synthetic.
So far so good I've been using it for a while and it's been clean and I did notice a small oil pressure increase 5-10psi when I switched. Whatever you do, make sure its synthetic.
03-30-2006, 12:17 AM
#6
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Join Date: Aug 2005
Location: Northridge, CA
Posts: 173
Re: What weight oil, 5w-30 or 10w-30?
For winter go with 10-30 since its colder, hotter months I go with 20w50, cause here in Souther Cali, it gets damn hot!!! If mileage is high above 75k, generally go with a thicker oil.
One summer, I ran 10 30 and oil press was just above red when idling, oil thinned out to much.
Warming up the car is good to but I think let it warm up for 2-3 min, then drive it slowly til car warms up, cause oil only starts to lubricate and do its thing when its warm.
One summer, I ran 10 30 and oil press was just above red when idling, oil thinned out to much.
Warming up the car is good to but I think let it warm up for 2-3 min, then drive it slowly til car warms up, cause oil only starts to lubricate and do its thing when its warm.
03-30-2006, 08:09 AM
#11
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Join Date: Aug 2005
Location: Glendale, AZ
Posts: 19
Re: What weight oil, 5w-30 or 10w-30?
[QUOTE=Dansean1]For winter go with 10-30 since its colder, hotter months I go with 20w50, cause here in Souther Cali, it gets damn hot!!!
When you have spent 15 summmers in 110-120+ degrees anything at or below a 100 feels like a very nice cool day
I run 10w30 mobile1 synthetic. I would like it to run cooler in the summer but the car never gets too hot. I am going to put a 160* thermostat and a fan controller on the car to help keep it cooler.
"Gotta love the desert...the sun destroys everything...eventually"
When you have spent 15 summmers in 110-120+ degrees anything at or below a 100 feels like a very nice cool day
I run 10w30 mobile1 synthetic. I would like it to run cooler in the summer but the car never gets too hot. I am going to put a 160* thermostat and a fan controller on the car to help keep it cooler.
"Gotta love the desert...the sun destroys everything...eventually"
03-30-2006, 08:31 AM
#12
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Join Date: May 2004
Location: Toronto, Ontario - Canada
Posts: 410
Re: What weight oil, 5w-30 or 10w-30?
There are a few local fbody guys that run oil analysis frequently (i.e. after every oil change), and they report very good results with german castrol 0w30. This is what I am using.
03-30-2006, 05:33 PM
#15
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Join Date: Feb 2004
Posts: 4,800
Re: What weight oil, 5w-30 or 10w-30?
http://theoildrop.server101.com/cgi/ultimatebb.cgi
I am tired of trying to dispell all the myths and missinformation on oil, that link is a wonderful one for those who choose to actually learn something about oil rather than keep on spreading missinformation.
I am tired of trying to dispell all the myths and missinformation on oil, that link is a wonderful one for those who choose to actually learn something about oil rather than keep on spreading missinformation.