Re: Seafoam for my 1996 f-150
I get samples 5 at a time with postage costs me ~$20/ea.
Oil change costs 5 quarts with filter:
Amsoil 25K: $78 a year
24K reg oil @4K change intervals at $26/ea: $208 providing the store has the cheapest stuff in stock
My G6 GT only takes 4 quarts! Also, I don't drive the full 25K a year on the oil. Once I hit 20K on my Taurus for mostly I stay within the 15-17K miles a year range. Even cutting out the cost of two regular oil changes it's still worth the cost savings. Not to mention my time and effort it would require to do an oil change every 3K to all my vehicles. Another drive-thru oil change shop was sued for ruining an engine by not installing the filter correctly - the shop cross threaded the filter and the oil slowly leaked out from a bad seal. The threads were in such horrid shape the oil shop ordered a new engine for the said vehicle. Dealerships want close to $50 here in Ontario for a regular 3K oil change. Drive-thru shops are in the $35-40 range. An extra $5 if the vehicle needs more than 5 quarts!
So, approximate cost is roughly $100 a year including one sample per vehicle with Amsoil. If I lived in the US, I'd get oil and filters at lower cost, including Amsoil products. I do a sample mid way through each year to give me not only oil life remaining, but if there are any contaminants in the oil, such as coolant or fuel dilution. If the number slowly increases each year I can knowingly expect a head gasket failure in the future, among other potential problems. So far, the numbers have been steady.
I did some work a few years ago on the Algoma Spirit - lake ship, when it was up in Owen Sound, ON. I was assisting with replacing the main conveyor bolts, some 8,000 of them. The things I do to help friends with tight schedules.... I stood inside one of the cylinders as the chief was replacing something on the top end. The ship had a whole wall of gauges and such just on oil.
My G6 GT has that stupid oil life monitor. It's useless as it doesn't measure the properties of the oil, but merely the running time of the engine and how much throttle you give it to calculate when the oil needs changing. It takes 4K for it to go from 100% to 0% and I just reset it, as I run the full synthetic. Manufacturers should have developed a proper system.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!