I am always looking at different oils on the market and I have been using castrol edge for about 12 years. 10W-30 in the summer and 5W-20 in the winter. I was thinking of trying 0W-20 in the winter, but I wanted to get some more insight on what people think. Does this weight still allow the characteristics to properly protect the engine?

 

20 weight oil is for engines that are designed for it. The 4g63 is designed for a 30 weight oil, stick with it. Do not run anything thinner than a 30 weight oil in your car. If you want thinner oil for easier cold winter starting, try a 5w30 or 0w30.

 

^ what he said. 30 weight with whatever initial modifier you want. I run 10-30 year-round but it doesn't get much below 20 for more than a few days here

 

I run Brad Penn it's great stuff

 

Rotella T6 - 5W40.

Car is stored for the winter.

 

I use Castrol 10w-30 year round for basically everything I own. The Galant sees Rotella 15w-40 non synthetic or Valvoline VR1 non synthetic 20w-50 only.

 

Rotella t6 5w40 (my bearing clearances are on the high side of spec). i pretty much track and autox the car, with the occasional weekend cruise. no way would my car survive on 20w

 

I just do factory fill Mobil 10W30.

 

Same as njboy Mobil 1 10W30 although specifically a full synthetic.

 

When I bought my Evo over a year ago, I had the same question re oil, I bought some mobile 1 but before I used it I read this forum on all the oil threads, Brad Penn and amsoil were the top oils then I read about how journal turbo's need a high zinc and phosphouris added oil, so because over here it's to hard to get Amsoil, I bought some penrite racing 10 with high zinc and phosphorous added. I used the mobile 1 for my family car instead. Penrite also make a good racing high temp brake fluid, I've done 4 track days on it without a hint of fade

Theres a table on oil brands and additives on a web site I can never remember where it is.

 

Did 0W-20 for 60,000 miles. I think I'm the only one though.

 

Typically always use Castrol full synthetic 10w-30 with STP filter changed every 3-4k miles.

 

On my Evo X I run VR1 10w-30 non synthetic race oil. Works great, 0 issues. On my IX track I was using Penrite 10w-40 racing oil. But Penrite has pulled out of the US so now I'm on the hunt for a new racing oil. Probably Amsoil dominator

 

out of curiousity, does anyone have a reasoning they would like to share as to why they use expensive oils in their daily drivers? particularly race/non-synthetic/etc?
and what info and/or research did you use to arrive at that conclusion?

not trying to start ANOTHER oil thread. just curious.

 

My "stock daily driver" vehicles get regular old off the shelf synthetic and a wix filter, changed at 7500 miles, or when the oil life indicator says to do so, whichever comes first.