Honda Civic 06. (4 Qrt)
I went for an oil change when I had about 12k miles on this car and gave the mechanic 4 quarts of Redline 5w-20 to change the oil (first time for redline). He changed the oil and after he started up the engine, oil started pouring down from where the filter was attached (he forgot to fasten the filter). I had no more Redline oil left to add, so he added almost 2 quarts of Valv. Synpower 5w-20. So far I have driven about 2500 miles with this mixture and I was wondering if such mixture would be a safe way to go or should I change the oil since it has a mixture of two different group based oils.
I went for an oil change when I had about 12k miles on this car and gave the mechanic 4 quarts of Redline 5w-20 to change the oil (first time for redline). He changed the oil and after he started up the engine, oil started pouring down from where the filter was attached (he forgot to fasten the filter). I had no more Redline oil left to add, so he added almost 2 quarts of Valv. Synpower 5w-20. So far I have driven about 2500 miles with this mixture and I was wondering if such mixture would be a safe way to go or should I change the oil since it has a mixture of two different group based oils.
