What coolant to put in the radiator?
I'm currently planning to get the coolant in my radiator and cooling system changed. I've look at some products in the market, including the nulon, valvoline and tectaloy but not quite sure which one should I use. I also found some unfamiliar models from Tectaloy (New(or may be even obsolete?)), so if any one have used them please give opinion about them.
- Nulon Coolant Concentrate (Sounds good with trusty results but some of my frds claim that it actually chews thru rubber pipes and alloy part of their engine as it's too concentrated even at the 2:1 mix)
- Valvoline Coolant Concetrate (Claimed to have 5yr protection but I'm a bit skeptical on their claims)
- Tectaloy 90+ (That's what I used on my old car, doesn't seem to be too bad, but not sure if it works or not in the engine of my na fairlane)
- Tectaloy 100+ (not quite sure how it rates when compared to a 50:50 mix of nulon)
- Tectaloy XP7 (Supposed to be used in utes, 4WD and light commercials. Claimed to be a heavy duty coolant, but can't find any details from the web. It's a 35% ethene glycol mix, about $23 in repco)
- Tectaloy Optimal 33 (Claimed that it can eliminate hotspot(?) on engine block by transferring heat quickly to the coolant (less heat conductive resistance(?)), but can only be found in motorquipe ($35). Again 35% EG mix)
I'm pretty curious about the Optimal 33 and XP7, but not sure if they're good enough to sit in the radiator of my car. Looking forward for all your opinions.
Swift. Agile. Deadly.
1988 NA Fairlane Series I
- 3.9L MPI Engine with 4.0L Equivalent Head
- Old Trusty 3 Speed BW M51 Auto
- Rear Sonar Sensor
- Cheapo CD Player
- Rear Spoiler
- All the luxury of a Fairlane