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RaMaPhOnE
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83 Posts
Discussion Starter · #1 ·
Good day folks. I'll start by saying I used the beloved "search" feature and found nothing to my satisfaction. I went to "Bob is the oil guy" forum to find only contradicting statements.

I have determined so far that an oil with a mix of PAO and ESTERS is best to use.

What I haven't been able to determine is "What oils have PAO and ESTER?"

I just put a new engine in my Blazer and I am trying to decide what oil to use.

I'm not too keen on paying for "synthetic" oils, and from what I've been reading lately I have trouble trusting that an oil is actually synthetic.

Anyways, unless someone can give me good reason not to, I am going to stick with good ol Castrol GTX 5W-30.

Thanks in adavance,
J.
 

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"factory freak"...
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8,601 Posts
here is more than you ever wanted to know about oil....

http://theoildrop.server101.com/cgi/ultimatebb.cgi

its really hard to go wrong with any good quality oil, be it petroleum, or synthetic.
i personally use mobil 1, but wouldnt lose any sleep over using petroleum oil...
 

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What's in a name?....
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311 Posts
Oh boy, here it will begin. There will be people that swear by the synthetics, then there will be those that will say that dino-oil is fine.

I use Castrol GT/X in my trucks and haven't had any issues with my motors....at least not in terms of the block itself :)
 

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Ahhhhhhhhh Satisfying!!!
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5,174 Posts
use a synthetic since its a brand new engine....I myself use valvoline synpower 5w 30 but royal purple or redline so far has met every top expectation so if you're really anal use something like that
 

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Registered
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90 Posts
mobil 1 full synthetic here, changed to synthetic at 78,000 which was about 1200 miles ago runs awsome no leaks at all. id recommend it.
 

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loco hombre
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3,461 Posts
Oh wow, I got in on the very first page before it turns into 12 pages of what everybody uses... :D

Just Mobil 1 here. It comes out close to a basic Valvoline dino oil, pricewise, when changing it less often, so I figured why not.
 

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PUNISHING GROUNDS
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3,350 Posts
Valvoline 10-40 for me in my 2.8 with 210,000 miles. Every once in a while ill run sum max life thru er, and some Lucas. It seems to do good.
 

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Gaaoooooo
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13,572 Posts
Mobil 1 also here. If you are running a brand new engine for the first time don't use synthetic until it is well broken in, I wouldn't switch to synthetic until a good 5000 miles or so. Until then, use like castrol or whatever is on sale.
 

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10,898 Posts
I'm using Royal Purple for now but will go with Red Line soon.
As far as a break in oil, why not a decent brand dino oil with
an oz of GM EOS Additive added with each qt of oil, for a soild
break in of parts ? There is also a link to Bob' s forum
regarding EOS.

http://www.sdpc2000.com/catalog/1016/products/584/GM-Engine-Oil-Suppliment-EOS-16oz-Bottle-.htm
http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=11;t=000243;p=0

Then after 5,000 or so go with an ESTER based syn as it
has seal swell capabilities where a PAO based oil doesn't.
Here is a link to another thread on the topic.

http://www.s10forum.com/forum/showthread.php?t=241937

If you didn't build the engine yourself, why not ask your engine
builder what oil he suggests using.
 

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RaMaPhOnE
Joined
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83 Posts
Discussion Starter · #11 ·
bg's said:
I'm using Royal Purple for now but will go with Red Line soon.
As far as a break in oil, why not a decent brand dino oil with
an oz of GM EOS Additive added with each qt of oil, for a soild
break in of parts ? There is also a link to Bob' s forum
regarding EOS.

http://www.sdpc2000.com/catalog/1016/products/584/GM-Engine-Oil-Suppliment-EOS-16oz-Bottle-.htm
http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=11;t=000243;p=0

Then after 5,000 or so go with an ESTER based syn as it
has seal swell capabilities where a PAO based oil doesn't.
Here is a link to another thread on the topic.

http://www.s10forum.com/forum/showthread.php?t=241937

If you didn't build the engine yourself, why not ask your engine
builder what oil he suggests using.

Sweet. Thanks for the info. Talking about engine oil has turned out to be a great conversation topic around where i'm from. I've been talkin to anyone and everyone about it. It seems that the majority of people get their oil done at a quick lube of some sort.

My mechanic say just use regular oil and change it regular.

I figure i'll eventually change to this ESTER based oil.

Anyways referto my rant: I GOTTA RANT.
 

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111 Posts
I used Valvoline Maxlife 5w30 in my engine for a while. This is until I experimented with synthetics. I started using Mobile1 7500 Synthetic. I noticed a 3mpg fuel economy gain, and more engine power. My engine has 130,000 miles on it, and it isn't burning any of the oil. The exhaust smells free from oil burning smell.

I reccomend using Mobile1 7500 Synthetic oil in these engines. It works VERY well! I read an article about oils, and Mobile1's oil was in the top 5 as far as the best kinds. Even better than Castrol.
 
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