Whats up guys,

I'm heading down to the dragon in two weeks, and am changing all my fluids. Should I go with a heavier weight for the trip? I normally run 10w30 (greddy turbo) but thought maybe 10w40 would benefit me. Any advice?

 

It is the first number that is the weight of the oil not the second. 10w30 or 40 would be fine. Not sure you should run any heavier with a turbo like 15w or 20w anyway.

 

In the Greddy turbo kit thread I think Chris suggested a different fluid weight than you're using. I went with 5w40 Redline when I was Greddy'd. Now I've got several gallons left to sell, since I'm SC'd...

 

I actually called GReddy and they told me to run the factory weight oil. (10-30) They just told me to use synthetic oil only. I have to disagree with s2000442 the second number is the thickness and the first number is the cold start thickness.

http://www.machinerylubrication.com/Read/171/oil-can

 

^yep you are right, I always tried to go with a 40 weight because it does not thin as much under higher heat.

 

The owners manual even says you can run 5W-40. I think in Europe or Japan, it is the suggested weight for stock cars.

 

Wow, wish I'd talked to you before I bought all that 5w40 Redline synthetic... Good to know.

 

So 10W40 wouldn't harm anything right? I've never actually had any issues running 10W30, just wondering if 10w40 was a better idea.

 

i run 10w40 in my car. as long as it doesnt see freezing temps u can increase the first number.

 

You mean decrease right? I live in NJ, and I do see freezing temps (although I almost never drive the car in the winter) but I also don't want the inability to start it. However, I will probably change my oil when I get back from the dragon, so it will only be in there for this trip.