06-15-2007, 01:20 PM
my experience with oil.
Miata engine #1: ran it on track with castrol GTX. Also ran it inadvertendly with 26 degrees of timing detonating the shit out of it. Overheated the oil, damaged bearings. Oil would thin and oil pressure would waver but never got dangerously low. Compression was shit. Switched to castrol GTX high mileage. Oil pressure stopped wavering, and after usign it about a year, compression had actually improved.
Miata engine #2: Mobil 1 - no problems, good pressure.
Miata engine #3: Started out with GTX high mileage. Went to mid-ohio and oil pressure was really really low- around 30 psi at redline (after only 1 weekend on the oil). Seemed to be overheating? No pinging and timing was fine. Did an oil change to Mobil 1 at the track and oil pressure immediately went up and stayed up.
Karens camaro has 300k+ miles on an engine that has never been cracked open running on mobil 1.
ill stick to mobil 1, but i also may try the castol stuff sometime
Miata engine #1: ran it on track with castrol GTX. Also ran it inadvertendly with 26 degrees of timing detonating the shit out of it. Overheated the oil, damaged bearings. Oil would thin and oil pressure would waver but never got dangerously low. Compression was shit. Switched to castrol GTX high mileage. Oil pressure stopped wavering, and after usign it about a year, compression had actually improved.
Miata engine #2: Mobil 1 - no problems, good pressure.
Miata engine #3: Started out with GTX high mileage. Went to mid-ohio and oil pressure was really really low- around 30 psi at redline (after only 1 weekend on the oil). Seemed to be overheating? No pinging and timing was fine. Did an oil change to Mobil 1 at the track and oil pressure immediately went up and stayed up.
Karens camaro has 300k+ miles on an engine that has never been cracked open running on mobil 1.
ill stick to mobil 1, but i also may try the castol stuff sometime