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1994 Chevrolet Impala SS. 237k miles. Purchased at 165k in July '04. As far as I know its had M1 10w30 syn from 90k when the PO purchased it to this day, on a 3000-5000 mile schedule. 3rd optispark, 2 water pumps. The 2nd transmission was installed at 222k and runs Dexron VI. Driven on the...

Some '99-present 2WD Silverados (New body style) have rack and pinion steering, these vehicles have either 6 or 7 grease fittings. Lower/Upper ball joints, outer tie-rod ends and depending on options, there may be a zerk fitting on the driveshaft. Some of the newer Silverados have the...

Got the updated report today: Aluminum: 3 Chromium: 1 Iron: 11 Copper: 1 Lead: 9 Tin: 4 Molybdenum: 64 Nickel: 2 Manganese: 0 Silver: 0 Titanium: 0 Potassium: 2 Boron: 132 Silicon: 5 Sodium: 5 Calcium: 2562 Magnesium: 19 Phosphorus: 753 Zinc: 898 Barium: 0 Here is the report, my comments are...

Got a call from Blackstone Labs on Friday as I was leaving town.. They told me there was a possibility they e-mailed me the wrong report and that they would re-test my sample. I haven't recieved it yet but I'll re-post it in this topic with an edited topic when it does come in. Mike

Yes, sample was cold I'll look into a 40w oil, I used to use 15w40 rotella in my older cars a few years ago but I might just use 10W40. Sample was taken straight from the oil pan after I let it drain about a minute. I put lots of miles on this car so I'll have another sample ready by next...

Supposedly the deep 4L60E pan with the drain plug has been discontinued and replaced with one w/o a drain plug. Main reason from what I've seen is the drain plugs were coming out while being shipped! When we get one in @ work (I work for a Chevrolet dealership) for a trans. svc we usually gotta...

Upper/Lower intake gaskets like to leak on these motors. There's also an EGR tube that runs next to a coolant passage inside the phenolic intakes, it can burn through to the coolant passage and it'll fill the cylinders up with coolant. These motors are a lot better on coolant leaks than the...

I'm hoping to find the cause soon. Plan on pulling the valve covers to see if they've sludged up. This thing has only had coolant in it for about 6 wks, previous owner used water and "water wetter" and I drained/refilled radiator with coolant for a trip to the sierras earlier this year. The...

Hello, this is my first post here but I've read the forums a few times before. I got a blackstone UOA kit a few days ago and changed my oil on the 22nd. Engine was cold so that's probably my 1st mistake. I had a Delco filter on the vehicle and that's all I use on it. I also have an aftermarket...