4.56 and 35's
#81
BAMF Club
http://auto.howstuffworks.com/fuel-e...uestion164.htm
Multi-weight oils (such as 10W-30) are a new invention made possible by adding polymers to oil. The polymers allow the oil to have different weights at different temperatures. The first number indicates the viscosity of the oil at a cold temperature, while the second number indicates the viscosity at operating temperature. This page from the Sci.Electronics.Repair FAQ offers the following very interesting description of how the polymers work:
At cold temperatures, the polymers are coiled up and allow the oil to flow as their low numbers indicate. As the oil warms up, the polymers begin to unwind into long chains that prevent the oil from thinning as much as it normally would. The result is that at 100 degrees C, the oil has thinned only as much as the higher viscosity number indicates. Another way of looking at multi-vis oils is to think of a 20W-50 as a 20 weight oil that will not thin more than a 50 weight would when hot.
At cold temperatures, the polymers are coiled up and allow the oil to flow as their low numbers indicate. As the oil warms up, the polymers begin to unwind into long chains that prevent the oil from thinning as much as it normally would. The result is that at 100 degrees C, the oil has thinned only as much as the higher viscosity number indicates. Another way of looking at multi-vis oils is to think of a 20W-50 as a 20 weight oil that will not thin more than a 50 weight would when hot.
#82
Senior Member
Thread Starter
You are 100% wrong.... http://auto.howstuffworks.com/fuel-e...uestion164.htm /hijack
#83
35s and 4.56 mpg
I have 35s on my 4.2l 2006 Xl with a 3.31 1wd rear end and get some ****ty *** mileage! Did the 4.56 cure that problem,and was it was faster with that setup?
#84
#85
I must have to say hadn't been on the forum for awhile but I did a small but efficient upgrade on my truck being an Edge CTS programmer. I've been running the programmer now for over 4 months and very impressed with it after doing some calculations on my MPG I went from 12.75 mpg to 15-16mpg which ain't much but definitely better than nothing for 300 dollars better than 2000 dollars regearing.