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Guys, We have two vintage automobiles (1960s & 1970s) that we use as daily drivers. How often (time or mileage) should the rear axle lube be changed in these vehicles? Is Syntec 80W-90 a good oil to use is these cars?

My wife's 73 Buick has a Turbo 350 automatic transmission. The tranny has about 120,000 miles on it. It recently began slipping a little in second gear...when downshifting going up a hill, it occasionally has problems shifting into second gear. One of the guys at Advance Auto Parts told me that...

Guys, I've seen Lucas Oil Stabilizer at the local parts store. It seems to be very thick...maybe not quite as thick as STP. What advantage is there in using this additive, if any? Does it do anything more than thicken the oil so that an old engine will burn less and perhaps run quieter?

Guys, I've seen several statements made on this forum to the effect that Fram oil filters should not be used. What is wrong with them? What oil filters do you all recommend and why?

We're all familiar with STP, but do any of you remember a product called Charge, made by Wynn's Oil Company? I was working in a gas station in the middle 60s when I came across this product. Its film strength was amazing! If you were to take a flat blade screwdriver and dip just the corner of...

I've often wondered how a company can rate its oil as "0W". Per the usual definition of the oil's viscosity, the first number is derived from the amount of time, in seconds, that the oil takes to run through a controlled measuring device at a standard low temperature. Nothing can run through in...

In reading the info on this site that describes the characteristics and processing of oil, it was mentioned that using a multi-viscosity oil with a viscosity range wider than necessary is not a good idea, due to the stress on the additives that are used to make the oil a multi-viscosity product...