Now what weight oil?

Status
Not open for further replies.
Joined
Dec 29, 2002
Messages
49
Location
MS.
After reading a lot of the posts and the other postings, I think I will probably go with the Castrol. Now the question is 10W 30 Or 5W 30. They both call for 5W 30 in their manuals. I Don't get cold enough down here to worry about low temps. But I see where some of it shears down. And I do go 5,000 between changes. Does the 5W give that much more milage? Oh yes beings I am getting pretty old my wife told me I should slow down some. I guess it makes her nervous, as she is a little bit older than I am. But WOW, on the Town Car, I was getting 20 to 21 miles per gal, at 65 to 70 or so. Now at 55, I am getting 25 to 27 miles per. I guess there is something good about growing old. That will probably be easier on the oil also. But one of the reasons I go 5,000 miles per change is, except for the pickup, all my trips are at least 20 miles most more, and a lot of them 150 miles. No real short trips.
 
Joined
Jul 2, 2003
Messages
5,358
Location
Gone
pruntyc, If you are going to go at least 5000 miles and aren't "into" doing a lot of oil changes, why don't you go synthetic and go even longer than 5K? Now, I am certain there are guys or gals on this board who could cite you examples of dino lubed cars which did well using 5K intervals; but like I told you in the post I just made in your other thread, you can find examples to "prove" anything; I would NEVER, you know like in NEVER recommend it!
 

pruntyc

Thread starter
Joined
Dec 29, 2002
Messages
49
Location
MS.
To Al, I am using Valvoline 5W 30 right now. And as for using synthetics I only drive about 5,000 miles per car, so they say it needs changed within a year, so it would cost too much for my use. They tell me over seas they go a lot longer than 5,000 before they change, and I believe it. I think that the 3,000 mile changes are a thing the oil companys are wanting. Even the car companys say like on mine 7,500, but I change it at 5.
 
Joined
Oct 11, 2002
Messages
22,187
Location
Colorado Springs
If it doesn't routinely get cold in your area, 10w-30 for sure is a better viscosity. The only time mileage will be improved with 5w-30 is in cold weather, because once the engine oil gets to operating temp, both 5w/10w-30s have essentially the same viscosity (until the 5w-30 starts to shear down closer to a 5w-20.
 
Status
Not open for further replies.
Top