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Originally Posted By: mazdamonky How long are the drives when it is taken out? if they are always drives up to temp, my vote goes with 18 month oil changes. Maybe longer. 90% of the trips it gets up to operating temperature, at least according to the coolant temperature. I'm not sure how that...

I've got a 99 Ram 3500 with the 5.9 Cummins that we use to haul horses around. The horse hauling has slowed down considerably, to a point where we're only driving the truck 1000-2000 miles per year. Most of the time, I just drive it back and forth to work (5 miles one way) once a week or so to...

Originally Posted By: matt922 looks like she does quite a bit of highway driving? Yep. 3 days/week she drives about 45 minutes to work, 80% or which is highway. The previous analysis was more short trips.

Originally Posted By: Quattro Pete Quite a lot of calcium in this sample... was this the green or gold GC? Was the previous UOA also GC? It was the Gold, the date on the bottom started with M09. The last analysis was also GC.

Here is my most recent analysis for my wife's 02 1.8T Passat. I hadn't done one in a while, and was worried I had ran the oil a little too long. I didn't mean to go 64XX miles, but it turns out it wasn't a big deal according to the analysis. I was kinda surprised with the comment about the...

The Subaru bypass pressure thread got me thinking.....I've read that some people don't recommend Mobil-1 and K&N Filters due to the low pressure of the Pressure Relief Valve, basically saying that the oil pressure, even at idle, was higher than the rated pressure for the filter, therefore, oil...

Certainly not. No one on a street sweepers salary can afford that is the awesomeness that is Lexus

Lexus makes a street sweeper?

That deos seem very high. My wife's car 02 Passat 1.8T, using the same oil (07 GC Gold) used no oil over the course of 4500 miles. At least not enought to register on the dipstick. Mike

Maybe I should have run the car a little longer before I did the change. I picked the car up from my wifes work and drove it the 5 miles (55mph hwy) to the house and immediately put it on the ramps and drained the oil. Should I run it a little longer the next time?

Yeah, Here's what happens to the PCV system on a Passats 1.8T engine if not maintained correctly. http://www.passatworld.com/forums/showthread.php?t=180331&highlight=breather+valve Mike

Car was bought used in Jan 07 w/68K. Spark plugs (NGK copper, the platinum PFR6Q's were hard to find), air filter, and oil change were done the first weekend (there was a small Wix filter on when I bought it). Since then I have replaced the entire PCV system, diverter valve, all 4 vacuum lines...

That sucks, but I'm not that worried because the top end looks pretty good with the valve cover off, and the oil pan seems to be pretty clean. No lifter noise and the cam chain adjuster is nice and quiet. It probably wasn't maintained as well as it should be by its previous owner. Any specific...

I am using the Mahle OC-105 filter, (the equivalent to the big kahuna, Mann W950/4). I'd say the mileage was split about 60% highway/40% city. The oil was in the car from the end of June to the 1st of September, the hottest months in eastern NC, August particularly. Could the high insolubles be...

What do you guys think? I'm pretty happy considering the gamble I took on this car with no service history. I'm wondering if the fuel dilution is due to my wife's driving style; too much idling time, and not very much time in boost. Almost grandma style, but not quite. Mike