I did some research on coolant.
The following information is from Drew99GT at the following link:
http://theoildrop.server101.com/foru...e=6#Post807452
The link below goes to a 6 page PDF article from MOTOR Magazine Aug 2004
http://www.gates.com/downloads/downl...older=brochure
Below is a small paragraph from the article:
Coolant Confusion: MOTOR Magazine - August 2004
American Green.
A light-medium green with inhibitors that include silicates and phosphates. Recommended service life could be 2/30, 4/50 or even 5/100.
Prestone American Yellow Gold.
Some think it has a green cast to it, but gold is the color of the dye. It also includes silicates and phosphates.
DexCool Orange.
An OAT coolant that features sebacate and the controversial 2-EHA as the primary inhibitors. Texaco Havoline, Prestone Extended Life and Zerex Extended Life make DexCool-approved coolants (along with other types). It’s now used only in GM cars for original equipment.
Japanese Green.
Usually a deeper green than American green, with inhibitors that include phosphates (no silicates). If it’s a conventional coolant, the recommended life span is typically 2/30. If it’s an extendedlife formula, the intervals go up to 5/100.
Toyota Red.
A conventional Japanese coolant with phosphates but, again, no silicates. Due to a similarity in color, it’s often mistaken for Dex-Cool, particularly in the Pontiac Vibe, a Toyota-engineered product.
Toyota Pink and Honda Deep Green Extended Life.
These new extended-life Japanese coolants use phosphates for fast protection (no silicates) and a single organic acid (sebacate) and other inhibitors.
VW/Audi Pink.
The version used in models sold in the U.S. is an organic acid type, primarily sebacate. However, some European models reportedly use combinations of sebacate and 2-EHA, so it seems to be a matter of who’s the supplier rather than an objection to 2-EHA.
European/Ford Yellow.
More of a yellow than Prestone American Yellow Gold. Its inhibitors include a relatively low dose of silicates (no phosphates), plus benzoate. It’s often called a HOAT (hybrid OAT), because benzoate is an OAT, though benzoate is not used in “true” OAT formulas. Euro yellow is sold in the U.S. aftermarket as type G-05.
Chrysler Group Orange.
The dye is orange, but the formula is G-05, the same as European/Ford Yellow.
Korean Blue. You also may have seen blue dye in some European cars (BMW and Volvo, among others). It’s similar to European/Ford yellow.
Brown.
Usually a combination of two coolants mixed together by a topup—for example, orange coolant repeatedly topped up with green, gold or yellow. It even may be an orange coolant discolored by heavy doses of sealer installed to avoid replacing a leaking heater or radiator.
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