Hi, i have some CAR PLAN PREMIUM RED 5 YEAR EXTENDED LIFE OAT ANTIFREEZE, can i mix this with the landrover orange antifreeze that is already in the car or should i keep with the landrover additive?

Looked into this when changing the coolant on my TDV8 and came to the conclusion nobody knows.

It seems not all OAT antifreeze types are compatible and MAY - if mixed - interact in a way that degrades the anti-corrosion properties.

Gave up trying to find out and just used the LR dealer supplied product (reluctantly). 2008 MY Java Black TDV8 HSE

Thanks for the reply, think i will play safe and as you say use the landrover antifreeze.

I looked in to this also, and what I found that is if you use an OAT antifreeze that's the same color and "standard" as what's already in the car, then go for it. I've also read that any OAT antifreeze that's not the same color but is the same "standard" (in the case of LR it's wss-m97-b44-d) as what's already in the car is also fine. That's probably why the Halfords OAT antifreeze is marketed as "Compatible with all vehicle manufacturers' colours of OAT coolants." Apparently the colour is just a dye, used for identification and marketing purposes.

As for your car plan antifreeze, I can't see that it confirms to the wss-m97-b44-d Land Rover standard and I would not use it . Recently bought a 2007 RRS HSE TDV6 for a Pimp-My-Ride-Project.
DONE: Meduza front bumper, AB rear bumper, AB tailpipes, calipers repainted, rear upper tailgate upgrade, side steps, AB front grille, AB side vents, rear LED lights, clear side repeaters, integrated daytime running lights, LED headlights.
TO DO: color code sills and pillars.

Thanks for the information, this confirms my hesitant thoughts about using the car plan antifreeze!