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Dr. Haas said this in an old Motor Oil University; "This is worth repeating: The synthetic 10W-30 grade oil is based on a heavier 30 grade oil while the mineral based 10W-30 oil is based on a thinner 10 grade oil. They are both similar at operating temperatures yet the 30 grade based synthetic...

I got a recall notice on my 2012 Chevy Equinox. All they did was change the computer with regard to the oil change interval. I have used mobil 1 0w-30 since the car was new. Since the recall, it looks like they changed the computer to cut in half the oil change interval. I don't use the computer...

I am driving my 65 Mustang from Canyon, Tx. to Charlotte, Nc. for the 50th aniversary of the Mustang. This is a drive of about 3000 miles round trip. I have been using Mobil 1 0w-40 with a little added ZDDP to get it up to 1200 ppm zinc. My question is this; Should I go with Mobil 1 15w-50 for...

Because of ease of flow on start up; would using 0w40 Mobil 1, in a '65 Mustang, be a good choice?

I am in Europe and the other day I saw some Agip 5w40 motor oil at a filling station. The price of one, one liter (a little over a quart) of this oil was 29.00 Swiss Francs. At $1.29 for one Swiss Franc that is $37.41 for that bottle. That makes for $180 sum dollars for an oil change before you...

Has anyone seen any VOA's for the new SM oils. I'd like to see the levels of ZDDP and Calcium in these new oils. Can anyone shed any light on the formulations for the new specification oils. Jerry

I'm kinda new to the BITOG forums. Some contributors have dismissed the people that claim that the reduction of ZDDP is bad for flat tappet engines. Some have said that the new oil has other anti-wear additives that make them better than the old oils. They seem to follow the oil companies like...

Does anyone know the amount of calcium, phosphorus and zinc in Lucas Break In Additive?

What was the grade of gear lube used in the differentials of cars in the mid 60's? What would be the best modern replacement?

What types of modern oil would be the easiest on the seals in my 65 Mustang?

Does anyone know the ppm of ZDDP that was in the old API SF oils?

Mobil 1 high mileage oil has a API rating of SL/CF. Does this mean that it has 1200 ppm ZDDP in it? I think the SM rated oils have no ZDDP in them.

My 65 Mustang has a 260 V8. I rebuilt the engine in 1997 and it has about 30K miles on the rebuild. For the last 8 years I have used the car less than a thousand mile per year. Since I use the car so infrequently I am worried about start up engine wear. Would it be alright for me to use a 0w30...