What oil do you guys use?
Thread Starter
Instructor
Joined: Sep 2005
Posts: 114
Likes: 0
From: Paw Paw MI
What oil do you guys use?
I've been a big mobil 1 guy for a while now... but what weight should I use on a '75 350 in Michigan where the heat is kinda mild but I only drive it on the nice days that are 70-90 degrees with the sun out....
I just got my '75 and the oil is rather black and I have a hunch the previous owner used cheap crap anyway so I'm going to change it this weekend just to be safe.
I just got my '75 and the oil is rather black and I have a hunch the previous owner used cheap crap anyway so I'm going to change it this weekend just to be safe.
Thread Starter
Instructor
Joined: Sep 2005
Posts: 114
Likes: 0
From: Paw Paw MI
Originally Posted by Duke94
Only synthetic (Mobil 1). No imported oil for me! (I suppose Mobil 1 is imported from china).
$6 a pop you say? When you drive 3x as long between oil changes I say its worth twice the price
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Team Owner
Joined: Nov 2004
Posts: 20,715
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From: Sorrento Italy
i've found out a funny and in some way illogical iussue but it's true, changing from 5/50 mobil 1 to a lighter 5/30 fully sintetic i've found a noticeable power increase, the engine revs easier and it goes smoother, did anybody else found out same thing? what would be the explanation?
Race Director
Joined: Sep 2002
Posts: 10,362
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From: San Diego - Deep Within The State of CONFUSION!
What oil? You may as well ask what's better, Chevy or Ford! 
If your engine is stock, use what you want. If it is a hot rod, then use Valvoline Racing Oil. My two cents.
If your engine is stock, use what you want. If it is a hot rod, then use Valvoline Racing Oil. My two cents.
Advanced
Joined: Sep 2005
Posts: 93
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From: Everett WA
Originally Posted by panic
i've found out a funny and in some way illogical iussue but it's true, changing from 5/50 mobil 1 to a lighter 5/30 fully sintetic i've found a noticeable power increase, the engine revs easier and it goes smoother, did anybody else found out same thing? what would be the explanation?
Safety Car
Joined: Dec 2004
Posts: 4,071
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From: San Diego CA
Originally Posted by gte718p
viscous drag. Its been robbing you of power for years. The only thing I don't like about synethic is it is so "slick" it will always find a place to leak out of on an older engine.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
For all us flat tappet cam guys I would stay away from the synthetics. There is not enough additives to properly lube the cam. I/we had a big topic on this about 3 months ago on the benefits/negatives of synthetics vs. dino oil. I am now using Valvoline VR1 racing oil. It has all the additives needed for flat tappet cams. The Rotella oil also has the right additives. The sythetics and newer oils have to meet emissions so a lot of the sulpher if not all has been taken out of these oils. The racing oil does not have to meet any emissions so they can leave the good stuff in there. I have talked to many engine builders at great length about this and most agree you need sulpher for flat tappet cams. Most of the cam manufacters are asking that you at least break in the cam with this type of oil, so why not run it everyday. It is not as cheap as everyday oil but not quite the price of synthetics either. 
Safety Car
Joined: Dec 2004
Posts: 4,071
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From: San Diego CA
Originally Posted by Gordonm
For all us flat tappet cam guys I would stay away from the synthetics. There is not enough additives to properly lube the cam. I/we had a big topic on this about 3 months ago on the benefits/negatives of synthetics vs. dino oil. I am now using Valvoline VR1 racing oil. It has all the additives needed for flat tappet cams. The Rotella oil also has the right additives. The sythetics and newer oils have to meet emissions so a lot of the sulpher if not all has been taken out of these oils. The racing oil does not have to meet any emissions so they can leave the good stuff in there. I have talked to many engine builders at great length about this and most agree you need sulpher for flat tappet cams. Most of the cam manufacters are asking that you at least break in the cam with this type of oil, so why not run it everyday. It is not as cheap as everyday oil but not quite the price of synthetics either.
Team Owner
Joined: Nov 2004
Posts: 20,715
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From: Sorrento Italy
castor oil
did any of you ever used castor based racing monograde oil? i've always used this type of oil in a competition mini and they claim is the best oil of all but need a change every 500 miles or so...also the smell they live around is so charming!!!