Fleetguard complet blue longlife antifreeze for Cummins ISL

Here are two more that meet Cummins standard 14603:

- Peak "Final Charge Global Extended Life"...I use this one.

- Zerex "Extreme Extended Life"

Does this work?

Prestone® Extended Life Antifreeze/Coolant is compatible with most antifreeze/coolants, regardless of color, for use in cars and light-duty trucks. This formula provides a high degree of performance durability and carefully balanced protection against temperature extremes, rust and corrosion of cooling system metals, including aluminum.

Product Features:
Provides long-lasting protection for extended performance when added to extended-life antifreeze/coolant
Protects engine cooling system metals, including aluminum, against rust and corrosion
Free of silicate, phosphate, borate and nitrate
Meets or exceeds ASTM D-3306 and ASTM D-4985

This is the spec for the ISL 400? ASTM D-4985

At $12.47 on Amazon seems like it fits the bill?

Not trying to start an argument but if it meets spec, it should be fine, right?

Just a question,

Passin Thru wrote:
CAT markets one similar. Around $20.00/gal.

Correct. Caterpillar ELC is a put it in and forget it for 6 year OAT-based coolant. Most of us with Caterpillar engines have switched to this.

CAT markets one similar. Around $20.00/gal.

Actually, you should not want our opinions.

This from Fleetguard's website:

http://www.cumminsfiltration.com/html/en/products/cooling/coolant/es_compleat/es_compleat.html

ES Compleat™

Use ES Compleat to provide superior engine protection, extend service intervals, and simplify your maintenance program.

DESCRIPTION

LITERATURE

REAL™ Performance

Lifetime coolant with service interval at 150,000 mi, 250 km, 4000 hrs
Provides antifreeze and antiboil protection
Best liner pitting and corrosion protection
Best aluminum and solder protection
Compatible with gaskets, elastomers and other non-metallics in the engine
Optimizes cooling system performance and water pump life
Contains proprietary scale inhibitors

REAL™ Versatility

Compatible with all other antifreeze/coolants
Choose from EG & PG formulations
Available in 50/50 & 60/40 premix
For all diesel, gasoline and natural gas engines

REAL™ Serviceability

Additive levels easily maintained via ES Extender liquid or a chemically charged filter
Easy to use test strips monitor glycol and additive levels providing protection against coolant dilution

Extend the life of your coolant
At 150,000 miles, refortify your coolant with ES Extender, a liquid chemical specifically designed to replace the additives depleted in the prior service interval.


End of Fleetguard quote.

Since you are unlikely to drive 150,000 miles in your RV you may not need to add anything.