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Ok I will change the PCV and check the tubing etc. I heard that maybe a blend oil might be good for this car? Would a straight synthetic be ok even though it might burn more of it? I do not know too much about High Mileage oils but maybe I should look into that as well?

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...

Manual says Engine oil with API certification Mark *1*3. Viscosity SAE 5W-30 API SM Energy Conserving Thanks coprolite for the useful info and link

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...

Thanks Mechanicx that is very helpful information!! Drew

Thanks!! Are the phosphates in the Mazda LL pretty standard and safe for a Japanese Car coolant system? I do feel more comfortable going with factory fluids and I put very little miles on my Mazda anyway.

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...

Thanks Finklejag!

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 know it is close to impossible to really know the answer but can anyone tell me how quickly VR1 levels of zinc/phos will kill my cats if my engine does indeed burn a good bit of oil? Even a ballpark figure would help. I just dont know if we are talking 10,000 miles or 100,000 miles.

I have heard from a very respected member on my forum that rotaries would benefit from ZDDP. I just had those two concerns about using them (Cats and Environment) but I dont know how big of an issue my concerns are.

Rotaries do burn oil by design which is why I'm worried about the environmental and catalytic converter issues of running VR1. I have been recommended VR1 by highly respected RX-7 forum members but most of them dont run cats. I have all my original cats so I was just wondering how bad I would be...

Originally Posted By: gomes512 Seems on par with the SG rated oils all right. I always wondered about the old school rotaries, I mean these burn oil by design right? What was the expected cat. life for those back in the day? Any mention of emissions equipment warranty in the manual? Was it the...

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...

One thing I forgot to ask, my application is for a unmodified 93 RX7 Twin Turbo. It is a performance car. I do not want to go K&N or any aftermarket upgraded filter though. So is the Fram Extra Guard still ok for a performance vehicle.

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...

One thing I did forget to mention is that the car only has 18,500 original miles. I am definitely not going to use junk oil in her just because I have to top off often. A good name conventional should do. People over at RX7 club are using alot of different grades of oil. 10-30/20-50 etc. Lots of...

Thank you guys for the opinions so far! If anyone else would like to chime in I'm open! I am really leaning towards Castrol GTX 10W-40 but I am not completely sure yet. Is Castrol conventional going to be better than valvoline/pennzoil/quaker state/havoline conventional oils? Drew

Do any of the brands that I mentioned stick out more that any other as being better? I was kinda leaning towards valvoline or castrol over quaker state/pennzoil/havoline/peak.