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Our family owns a 2002 Maxima SE (Over 125k miles) and I had two questions: 1. It consumes a good bit of oil between changes. I always drain out much less that I put in, and I finally started searching and see that this is a common problem in this generation of Maxima (2000-2003). Other than...

Just wondering what you guys would recommend for a 2011 Infiniti G37x. It has a 3.7l V6 I have done some research on an Infiniti forum and people seem to be all over the place. Some use conventional some use synthetic. People are using all different brands. I have found out that the Infiniti...

Hey guys, Just wondering if I made the right choice about coolant for my 93 RX-7 as I will be doing a coolant flush. At first I had looked at Prestone Extended Life Coolant (the concentrate not the 50/50) which was around $13 a gallon at Wal-Mart. It says that it is phosphate, silicate, and...

I was just looking for some advice for oil change intervals for the two cars I own: 1. Subaru Impreza WRX (2.0L Turbo Boxer). I use Shell Rotella T6 5W-40 Synthtic. The car has 53,000 miles and only sees about 3-4 k miles a year. 2. 1993 Mazda RX-7 (1.3L Rotary Twin Turbo). I use Castrol GTX...

Does anyone know if this is a good oil or how much zinc/phosphorus is in it? I have a 2003 Subaru WRX (Turbo) and was thinking this might be a good oil for my car. People on my Subaru forum really like Shell Rotella T6 5W-40 but I am worried about the higher levels of Zinc and Phosphorus in it...

I am thinking of running Valvoline VR1 racing conventional motor oil in my 1993 Mazda RX-7 Twin Turbo (18,500 orginal miles). It is ZDDP reinforced. The levels of Zinc/Phosphorus are .14/.13. I was wondering two things. How high are those levels really? Do they pose a real threat to either the...

I just got around to changing my air filter in my new 1993 Mazda RX-7 for the first time. Did not know it was going to take 1 hour of removing over 7 hoses with clamps from the factory airbox! I did not have time to go to the dealership and order a OEM filter and the only filter locally...

I have asked a few qustions on here but I really need to go back to the beginning and ask something very basic. What oil would you guys recommend for a 1993 RX-7 1.3L Twin Turbo rotary engine? I have heard good things about both 10W-30 and 10W-40 for my car and have been recommended both by...

I am running 10W-40 conventional oil in my car. I know that by definition it cannot be "Energy Consering" or hold the "GF-5" rating because it is a 10W-40. I am environmentally minded and wondered what the impact was of not running something Energy Conserving or GF-5 rated. My oil is "SN" rated...

I was wondering if anyone knew the levels of zinc and phosphorus in Castrol GTX 10W-40? I called and they said they could not give those numbers out? Thanks, Drew