they work great,they are not a cure for mechanical breakdown but do offer more protection.lucas was originally designed for heavy truck use. i have used these products for many years and never had a problem. as for cold starts the lucas stays on the parts to protect them till oil gets to them. as an example at 20 below 10w30 can take up to 3 minutes to lube the top end were as 5w30 takes less than a minute,this time period is where lucas adds protection
If you are going to buy an oil additive, Lucas, is the best. If you do regular oil changes then its really a waste of money
Axle RPM? Since the wheels are bolted to the axles, each revolution of the wheels equals a revolution of the axle. It may be necessary to restate your question in order to get the needed response. Sorry
