Additive / Treatment

[LostMy65]

What products do you use in your gas or engine? Especially for the older SBC that depended on older fuels and oils that now don't have those necessary additives in them anymore?

[LostMy65]

Found these just using Google.
https://vehq.com/oil-additive-older-engines/
.
https://top10best.how/zinc-additive-...RoCywQQAvD_BwE

[Cris]

Lostmy65:

There are a lot of oils that are designed for older flat tappet engines. One of the most popular series is the Brad Penn (PennGrade) high performance oils. They have the right additive package and are used widely in racing and vintage motor applications.

https://penngrade1.com/products/high-performance-oils/

Another brand are the Joe Gibbs (Driven) hot rod oils.

[dagnabbitt]

I use Rotella, and Lucas Oil Stabilizer.

[toolboxchev]

Many miles attributed to Valvoline VR1.

Many more now for the fuel Chevron Techron Marine Clean! The most effective and cost productive.

['68OrangeSunshine]

Originally Posted by toolboxchev

Many miles attributed to Valvoline VR1.

Many more now for the fuel Chevron Techron Marine Clean! The most effective and cost productive.

For vintage Chevy engines, I use and recommend Valvoline SAE 30 Racing Oil [VR1]. I ran my first built 292 on it for 250,000 miles. I re-engined in 2005 with another built 292 and still run VR1. This oil still has proper levels of ZDDP, so you don't need more oil additives. The ZDDP is needed so your cam lobes don't get wiped out. Because new engines have catalytic converters [with platinum] the zinc was fouling them, so Oil companies have been gradually deleting the zinc for the last 20 years in mainstream oil. By now there's no zinc. [If you're running Roller Rockers, then you can use contemporary oil. If you have an old engine, or it was built the old school way, then you need the ZDDP.]
The only fuel additive I use is Sta.Bil but that's because I buy gas in bulk at the end of the month with supermarket points and store it in jerry cans. Keeps pump gas fresh for 48 months. But it's not a performance additive.

[LostMy65]

Originally Posted by '68OrangeSunshine

For vintage Chevy engines, I use and recommend Valvoline SAE 30 Racing Oil [VR1]. I ran my first built 292 on it for 250,000 miles. I re-engined in 2005 with another built 292 and still run VR1. This oil still has proper levels of ZDDP, so you don't need more oil additives. The ZDDP is needed so your cam lobes don't get wiped out. Because new engines have catalytic converters [with platinum] the zinc was fouling them, so Oil companies have been gradually deleting the zinc for the last 20 years in mainstream oil. By now there's no zinc. [If you're running Roller Rockers, then you can use contemporary oil. If you have an old engine, or it was built the old school way, then you need the ZDDP.]
The only fuel additive I use is Sta.Bil but that's because I buy gas in bulk at the end of the month with supermarket points and store it in jerry cans. Keeps pump gas fresh for 48 months. But it's not a performance additive.

Great post.

[LostMy65]

I'm also wondering of what to use to help with keeping the fuel system and carburetor clean and free from moisture damage from ethanol fuel.

[LostMy65]

I've been reading a lot of good reviews for Star Tron.

['68OrangeSunshine]

Originally Posted by LostMy65

I'm also wondering of what to use to help with keeping the fuel system and carburetor clean and free from moisture damage from ethanol fuel.

For ''drying out'' your fuel system I use Heet. It's more alcohol. but it will absorb the water so you can burn it off. Also a shadetree cheat for getting your old engine to pass state emissions tests. Red or Yellow bottle, either works.