[Huskymaniac]

Originally Posted by Birdy

My SVX has 175,000 just replaced sensors, head gasket recently. I live in high altitude in Denver Colorado so its startin to get cold too. Looking for the best oil and filter for our SVX. Also what type of oil should i use here. I am not really that car savvy.. (I will be by the time i am done with the SVX lol) Feedback is much appreciated.
Thanks
Dave

There is a ton of information on this in multiple threads. You really need to use the search function. But I will go ahead and repeat what I have said in the past.

I like that we can buy oversized filters. There are tight passages in the bearings and anything to help oil flow and pressure is a good thing. Also, it enables you to comfortably go longer between oil changes. The best one out there is the Bosch Premium which is a rebadged Purolator Plus. It is a very high efficiency filter and will keep your engine free of even the smallest particles.

On oil, if you use an oversized filter you can go with a synthetic oil and make it cost effective by extending the oil change interval. With the mileage you have, I would suggest a high mileage oil. There are two synthetic oils which offer high mileage products and they are Mobil 1 and Valvoline. The Mobil 1 has been rated higher. There are opinions out there that M1 is bad for Subaru engines but I don't think that is true for two reasons. First, years ago M1 was thinner than most oils. It has changed and is now thicker. As such, it stnds up to high RPMs and high heat better than M1 of many years ago. Second, High Mileage M1 is even thicker than standard M1. That is true to the point where you, in CO, can probaby run 5W30 year round.

And don't forget the air filter. For filtration, AC Delco has tested out as the best. That air filter plus the Bosch Premium oil filter should keep your engine nice and clean.