You should check yours and see if it's been replaced or not, you may already have the new style headgaskets, you can tell just by popping the hood and looking in the right spot. The present design should hold up well untill there is another emission standard change, then the learning curve starts all over again. Almost all mfgs have or had one engine with a bad head gasket design. Neons have a 100% failure rate at about 60,000 miles. There is no accelerated life testing on a Head gasket, unlike other parts of the car. Its amazing how many opposit forces and temperitures it has to deal with all at the same time. In defense of subaru, and other mfgs, the head gasket is the hardest part of the engine to design. Some here have gotten after market HG just to discover (the hard way) that they were old stock, not the newest. SUbaru only offers the newest and (fixed) design of the head gaskets. You need to use the subaru additive to protect yourself in phase II engines if you wish to make a future warrenty claim.
SUBARU COOLANT ADDITIVE CONDITIONER FOR FREE
If you have under 100,000 and a good dealer to back you up you can usually get it for free even if your not technically under the extented warrenty. No recall just an extented warrenty on phase II engines.
The higher end seems to be in germany where they like to drive hard and fast. Percentage is 15-20 % from real world failures. Has Subaru ever said what percentage of stage 1, 2.5 motors will develop head gasket trouble? Was there ever a recall offering a permanent fix? If I ever have to replace hg, is there a revised hg that is better then OEM? Thanks to all about coolant additives to help lessen hg problems. With Phase I motors it is not a matter of if they will blow but when they will blow. There is not much you can do but cross you fingers and hope for the best. Is that product good? The Subaru additive is for phase II (00-04) 2.5 motors that blow HG externally, the phase I (96-99) blow them internally.
Has anyone here used this product? Was this the best product to use, or is there something better that I should be using on my 2.5 motor? Also, Subie dealers sell some coolant additive product designed to save head gaskets.
He said that Cadillac adds these pellets to their new cars at time of manufacture to prevent head gasket blow out problems on their cars. To help prevent this, he added some GM Cadillac sealant pellets to the cooling system. He was very aware that 2.5 Subie motors have a tendency to blow out head gaskets. I had him change the tb, front crank seal, water pump, and fan belts. I took the car to my favorite mechanic who has his own shop. I recently bought a '99 OBW with the 2.5 motor with 149K miles on the odometer.
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