oil weight.
 

Do you guys suggest to run 10w30 in the summer? I have 5w30 in it. it leaks a lil from the valve cover, but wondering if that is a good idea.:confused:

Re: oil weight.
 

I run 20w-50 in mine all year round, but I live where it is never below 40 degrees F.

In the owners manual is a chart that shows what weight for what temperatures you should use.

Re: oil weight.
 

ya its -11 right now. I dont have a owners manual for it actually. otherwise i would of looked at that.

Re: oil weight.
 

Recently I started using Mobil 1 0w-40 synthetic.

My valve covers do leak a bit now, but I know that they need to be replaced anyway.

The first number in the oil description is the low side of the temperature range. 0 being the best because it can operate at extremely low temperatures. The second number is the high end of the range. Higher numbers have excellent wear characteristics but don't work at as low of temperatures. A 0w-40 is great because it doesn't sludge up in cold temperatures, and it can protect as well as a 40w.

Anyway, that's my take on it. It was 20 below 0 this morning plus windchill and the car started just fine. Last year at this time I had to jump it a few times because it cranked much harder. So I am convinced that it is doing the job.

Re: oil weight.
 

I don't have any extreme temperatures, so I run what they suggest - 10 - 30, but I use a synthetic/regular mix, and change it at 3,000 miles. :)

Re: oil weight.
 

Per the tables you're right at the bottom of the 10w30 range at -11degrees, with 5w30 recommended. But since you're asking about summer operation, 10w30 or 10w40 is the recommendation. There is a specific warning however about NOT running sustained high speeds with 5w30 in the sump.

Glenn

Re: oil weight.
 

Exactly. That's been enough to scare me away from the 5w30 for this car.
(10w30 for me)

Re: oil weight.
 

Please define "high speeds"

Keith:cool:

Re: oil weight.
 

faster than slow speeds, yet slower than extreme speeds :p

Re: oil weight.
 

Thanks!

Keith:cool: