im using ams synthetic 20-50 racing oil.. first time using it

 

+1 But not for the first time. I'm an Amsoil dealer. What car are you driving and what is the suggested weight for your area? Synthetics don't break down like traditional multivis- oils do. If I were sporting a power adder, I'd definitely be sporting some kind of synth. oil. Also, the clearances of a mod motor are much tighter than that of a 5.0 pushrod motor. So a multi vis with a 5w- is probably recommended, as opposed to a 10w- or heavier in a 5.0.

Batman

 

i use 20-50 in the stang, porsche and bike. it has been really good to me in the florida heat. when the stang was a race car i used 0-30 mobile synthetic. i went to the castrol 20-50 and the oil seems to hold up better in the heat down here. doesnt break down as easy. others will have different oppinions as everyones needs, experience and preference are different.

 

Its not quite as hot here in NC as it is in Florida.

5 20 or 5 30 should cut it for a car that is not a daily driver?

Or should I go 10 something?

 

what should i run in a cammed/intake/bolt on fox? its my DD, live in florida.

thanks.

 

I've always used 10W-30 Castrol GTX

 

Amsoil recommends (1)0w-30 and (2)5w-30 motor oils for our cars.
http://www.amsoil.com/storefront/SearchResult.aspx?CategoryID=1
http://www.amsoil.com/storefront/SearchResult.aspx?CategoryID=7
http://www.amsoil.com/storefront/SearchResult.aspx?CategoryID=3

 

Now that we're over 100*F (lows of 70*F), I'll be swappin to 20-50 myself.

My simple rule is to run the least viscous oil that maintains decent pressure in all conditions (normally hot idle is when it is the lowest). I haven't seen a reason to go against this idea (unless blowby or something else is occurring and a bandaid is needed). I am old school and like thicker oil (partially due to my living in a hot climate and 302's getting the motor oil surprisingly hot. This is where a cooler or some of Bat-stang's juice can help out).

For guys running the boutique oils (or even if not), a UOA is never a bad idea at all. The knowledge gained can save you some cash (Extended OCI's).

Good luck.

 

88 LX and 99 Cobra - Redline 10w 30

01 Impreza - Mobil 1 10w 30

 

Shell Rotella 15W40. It keeps things super clean and holds up well under the heat of a filled block and hot lapping.....

 

Plus it has zinc additives to reduce wear. Good and cheap. One of the few things in life that fill that description.

 

I am going to try mobil 1 10-30 full synthetic on this oil change.

 

i just changed my oil on saturday, motorcraft filter and castrol 10w-30.