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I did my first oil analysis, this is on a 1996 Mustang Cobra 4.6 DOHC that doesn't get driven much (338 miles this past year). The oil was in service for one year. I was mainly concerned about the TBN to see if it would be good for another year, the oil from the report appears almost new, so it...

I'm using Blackstone's vacuum pump to take an oil sample, however, the 1/4 polyethylene tubing I got from Home Depot doesn't reach all the way down my dipstick (about the last 3"). Does anyone else have a source of smaller diameter tubing that would work?

I've been trying to find a good timing belt/tensioner/pulley/water pump kit for my Audi A4 1.8T. I ordered a Gates kit then found out they don't use NTN brand tensioner pulley's anymore, they're made under their own brand (it's stamped with their Gates logo), and also made in China. Has anyone...

I have some "Mobil 1 75w90 LS" (LS meaning it's okay for limited slip differentials I assume), will that work in a 2003 Audi A4 quattro center differential? I know the manual trans. models need GL-4 but since this is an auto (tiptronic), will this Mobil 1 GL-5 oil work or should I stick with...

I have a couple cars that get driven typically only a few hundred miles per year. I'm approaching the 1 year mark and instead of changing the oil, I'm wondering if an oil analysis (with TBN?) will tell me everything I need to know if it's still okay to keep using the same oil? Since it's about...

I have a Chevy 350 (LT1) engine in a classic car that isn't finished yet, it's actually been in storage for over 10 years. Since it isn't driveable yet, I have problems with the fuel in the tank and clogging up the injectors, etc. I've tried using sta-bil, but that only lasts about a year. The...

I have a few vehicles that are driven less than 1,000 miles/year, I think I drove the pickup only twice this year (about 100 miles total). Would an oil analysis tell me if my year-old oil is still good? Would I need the TBN test for it? Could I stretch my yearly oil change to maybe two years if...