Engine Cooling System problems of the 2004 Mazda RX8

Eight problems related to engine cooling system have been reported for the 2004 Mazda RX8. The most recently reported issues are listed below.

1 Engine Cooling System problem

Failure Date: 06/13/2011

I noticed a small oil leak coming from below the driver's side oil cooler. Upon taking this apart, I saw that the oil leak was coming from the oil cooler hose and the oil cooler hose fittings were very rusted. I ordered the part to replace the driver side, costing me $350. I haven't recieved the part yet and will be without a vehicle for one week. I have read up on this problem, and I have found that there is a recall affecting my make, model, and year that my car was built, but only for people who reside in canada. Mazdausa will not acknowledge this recall.

2 Engine Cooling System problem

Failure Date: 08/25/2010

I own a 2004 Mazda RX-8. I noticed there was oil leaking from the vehicle while it was parked in my driveway. I took it to a Mazda dealership to be repaired. The oil hose was badly corroded and rusted, causing it to leak oil onto the tires, brakes, and road. The oil hose and gaskets had to be replaced with new parts, costing over $600. 00. Mazda canada has re-called the oil hoses on the RX-8 in canada because road salt was tending to cause corrosion of the oil hose. However, Mazda USA refuses to re-call.

3 Engine Cooling System problem

Failure Date: 03/01/2010

Oil cooler lines in front of vehicle rusted out after 60k miles. Oil leaked onto tires/brakes.

4 Engine Cooling System problem

Failure Date: 12/12/2009

2004 Mazda Rx8 has a known issue with the external oil cooler. The pipe that transports oil from the engine to the cooler and back is exposed and subject to corrosion from environmental exposure, in particular the aluminum reinforcing material in the pipe is vulnerable to road salt. This problem is known to Mazda. In canada they have issued field action number 142-36, which is a recall in which they replace these pipes with a redesigned part that is less susceptible to this defect. They have chosen not to extend this recall to the us because (quoting from the recall document): "the Mazda RX-8 is sold in the u. S. , however through review of field reports and warranty claims where road salt is used, there is very little evidence of this condition in the u. S. Mazda has concluded that no field action is required in the u. S. Market at this time. " the reason I believe this is a safety issue is that in my case, the pipe perforated while the car was in motion, spraying a large amount of engine oil at high pressure into the internal engine compartment, and onto the road behind me. Had I not killed the ignition almost immediately, I believe the engine would have voided all of its oil onto the road. I believe this exposed those driving behind me to hazardous conditions, and could have contributed to a serious accident (although none occurred in this case). Again quoting from the canadian recall document: "the small amount of potential oil seepage will be evidenced to the customer when the vehicle is parked and is not believed to present any risk to safety. " clearly I do not agree with their assessment here!.

5 Engine Cooling System problem

Failure Date: 11/20/2008

I'm having problems with my 2004 Mazda Rx8 I had a replace engine on my car and the car had a engine flooded before and now last night doesn't want 2 start and there's are a few recalls for this car and I want 2 take actions with Mazda.

6 Engine Cooling System problem

Failure Date: 11/01/2008

The contact owns a 2004 Mazda Rx8. While driving 15 mph, the vehicle made a creaking noise whenever the steering wheel was turned. He took the vehicle to a local repair shop and the mechanic stated that there was a tear line crack in the lower control arm in the suspension. The contact received a recall notice in 2005 for NHTSA campaign id number 05v325000 (suspension:front:control arm:lower ball joint) and the manufacturer repaired the vehicle for free. The failure has recurred, but the manufacturer refuses to repair the vehicle according to the recall. He believes that the component that was used to previously repair the vehicle was faulty; therefore, the manufacturer should be responsible for the repairs. The check engine indicator would randomly illuminate while driving various speeds. A local mechanic stated that the vehicle experienced a ruptured oil cooling line. During the repair, the technician noticed that the oil pan was perforated and leaking oil. The oil pan needed to be replaced; however, the oil cooling line was replaced. The mechanic stated that this was all caused by rust. The contact was unable to find a recall for the failure, but believed it should have also been recalled by the manufacturer. The approximate failure mileage was 8,000 and current mileage was 42,000.

7 Engine Cooling System problem

Failure Date: 08/11/2008

Drivers side oil cooler lines have metal section and connector as they pass from engine compartment to wheel well. This metal section has corroded through and produced a hole in the metal oil line allowing engine oil to be sprayed onto brake system, front tire and rim, and consequently under rear tire track. This resulted in hard pulling to right (passenger side) under stiff braking, skipping and loss of traction of front left (drivers) tire due to oil soaked condition and loss of traction of left rear tire from tracking in oil pattern. Mazda canada has issued special service program (ssp 76) for this issue. Mazda europe has initiated a similar program, there is no us recall or ssp as of this date. Ssp replaces effected parts and provides for redesigned wheel well liner to protect oil fittings from corrosive road salts and water.

8 Engine Cooling System problem

Failure Date: 07/01/2008

2004 Mazda Rx8 with water mixing in with the oil. Consumer states that the mechanic stated that water in the oil was normal and how the vehicle vented. There was red antifreeze in the vehicle and green antifreeze should have been used. The dip stick was covered in a hard, crystallized, orange/white substance. The vehicle overheated and steam emitted from the vehicle. After inspecting the vehicle, it was determined that the thermostat had malfunctioned. The consumer was informed that because the wrong anti-freeze had been used, there may be future cooling issues with the vehicle.




RX8 Service Bulletins
RX8 Safety Recalls
RX8 Defect Investigations