Recent content by proffittmarke

I used Amsoil SS on my GM 5.3L L84 DFM until 90K miles. It started using a quart every 7K mi., regardless of low advertised NOACK. I googled for an oil with a high flash point and RP is 450°F versus 428°F on Amsoil SS 0W20. I’ve done two 7K mile runs on the RP and have not used a drop of motor...

I’ve used Fumoto for years on several vehicles. Whenever I change vehicles, I consider the others, but always go with Fumoto. Just flip the lever and, after oil drain, flip it back. With many other brands, it seems like more work than would be involved with using the factory drain plug ie plug...

2022 Sierra 5.3L L84 126K mi. Change oil every 6K with 0W20. Burns ½-to-1 qt between oil changes. Only time it never burnt a drop is when I added Lubegard Biotech Engine Treatment. But, it’s ½ the price of an oil change. Cheaper to add make-oil. Last 5 oil changes I used Castrol Edge, only...

My wife only drives 6K mi/yr and has me change her oil every 3K mi with Mobil 1 and she demands a new K&N oil filter (the expensive white one). Last oil change, I left the old K&N oil filter on and put in 5 qts. of fresh Mobil 1. When I was finished, the oil looked almost as dirty as the oil I...

Very beautiful car.

That’s a good oil, the GTX. However, when Walmart lowered the price of Edge to match the GTX price, I switched over to Edge.

2022 GMC Sierra Limited X31 5.3L 123,451 mi., 4,971 mi. on oil Engine- Out Castrol Edge 0W-20 (used no oil) In Castrol Edge 0W-20, Fram Ultra Oil Filter Rear differential- Out Valvoline 75W-90 In Redline 75W-85 Transmission pan pumped- Out Valvoline ULV In AC Delco ULV + Lubegard Platinum...

I remember back in 1977 when I purchased a new Buick Regal with a 350 c.i. engine. I put Mobil 1 in it and in 500 miles, every seal and gasket was leaking. I stayed away from it for nearly 35 years. Then, I put it in a new 2011 Chevrolet Silverado 5.3L and the rear main seal started leaking...

Lubegard Kool•It added to the coolant reservoir brought my temps down. Napa or Rock Auto has it.

I bought a new Cadillac XTS in 2014. It broke down and had to be towed 8 times in 18 months, before I traded it in. I’ve had several new vehicles (23 in total) and put 100-250K on many of them, with no repairs done to them. My current vehicle is a GMC w/ 5.3L and I’ve logged 124K miles on it...

I have a ’22 GMC Sierra with a 5.3L L84 DI, rated at 14/19/16 mpg. Last week, I got 24.2mpg on a 700+ interstate trip. Have racked up 124K mi. and averaged 18.6mpg. I use 7.5 qts. Castrol Edge 0W20 plus 15 oz. Lubegard Biotech, Fram Ultra oil filter, K&N oiled air filter, oil catch can, and put...

The roads are good, gas is cheap, and insurance is reasonable. However, paying an additional $3-5,000 over the ownership of your vehicle seems a big much.

A 2 year old high mileage truck and a 5 year old truck. $1200 for both in Missouri. Was $1800 2 years ago. You have to pay it every single year, and it goes down based on the value of the truck minus any high mileage adjustments.

22 new cars over past 48 years. I’ve added ratings indicating reliability to the right of the year for each vehicle (1=Low, 10=High). Note that I’ve driven over 1.5 million miles. Buick Regal 1977 (7) Toyota Celica GT 1979 (8) Oldsmobile Cutlass 1981 (6) Pontiac T1000 1982 (2) Hyundai Sonata...