What motor oil do you use in your Shelby

[deathsled]

I personally use a synthetic blend of Motorcraft 10W30.  I presently have a 302 roller rocker in the old gal made to look vintage while the original 289 slumbers in my closet.  Yes, my closet.  I mean hey, even Chopin had his heart cut out and preserved in a jar of brandy and kept in the wall of a church (to this day) so why not a 289 engine which in essence is the heart of an automobile.

[Don Johnston]

Makes perfect sense to me!

[TOBKOB]

while the original 289 slumbers in my closet.  Yes, my closet.

The engine for my '69 350 sat in a spare bedroom for 3 or 4 years until I moved in 1978 and then sat in an enclosed back porch for a few more years. It now has a permanent residence in #2060 since 2015. 

TOB

[greekz]

Valvoline 20/50 Racing Oil for 28 years.  Have not had any engine problems.  Change oil and filter once a year.

[Bigfoot]

Valvoline VR1 in the big block
Mobil 1 in small block

[6s1640]

If you have a flat tappet cam, it better have Zn[S2P(OR)2]2 or zinc dialkyldithiophosphates, also known as ZDDP.    I use Valvoline Racing 20/50 Motor Oil.

Do not use a synthetic or a blend with a flat tappet cam without Zinc protection.   If you do, get it out now.   If the engine has a roller cam and rocker (both), the synthetic is fine without Zinc protection.

Best of luck

Cory

[Greg]

Brad Penn and Joe Gibbs 20/50

[s2ms]

Valvoline 10W-30 VR1. Change oil & filter once/year and send a sample to Blackstone for analysis.

Dave

[Greg]

I also cut the filter open after I change the oil to see if there is any metal in it.

[deathsled]

If you have a flat tappet cam, it better have Zn[S2P(OR)2]2 or zinc dialkyldithiophosphates, also known as ZDDP.    I use Valvoline Racing 20/50 Motor Oil.

Do not use a synthetic or a blend with a flat tappet cam.   If you do, get it out now.   If the engine has a roller cam and rocker (both), the synthetic is fine.

Best of luck

Cory

Roller on all accounts, but good information to know.  Thank you very much!

Richard E.

[2112]

Joe Gibbs Racing 20W 50 Full synthetic

For Break-in; Joe Gibbs Break-in oil. (Dino oil)

[6s1640]

It appears the Joe Gibbs Racing motor oil comes with Zinc. Nice.

Cory

[papa scoops]

66 350 has used Valvoline racing every 2k, since new, 68 uses Castrol gtx since 2nd oil change, every 2k. both get motorcraft fl1 racing filters. all of my oil is cases of old school . phred

[GT350Lad]

Makes perfect sense to me!

Perfect 

[1690]

VR1, Valvoline Racing 20w50

I do not go by mileage since my mileage may vary season to season, so I just replace it once a year.