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Iridium? Cobalt? Must be from those expensive spark plugs. LOL! For whatever reason, wear metals from the SAAB 2.3L turbo engine are usually higher than other engines. For example, Blackstone's universal averages for this engine (after 3,000 miles) are about: Fe: 30 Pb: 14 So for a 10K...

I think this is one of those Delphi-sourced ACDelco filters...

I'd conclude that Syntec 5W-50 was in the sump, and the owner was about to change it with red-cap M1 but didn't get around to it yet You can't really conclude anything from one engine... or five.

Lots of factors at play here; I agree, temperature plays a big role. Fuel economy seems to really suffer when the temperature is below freezing. With my '02 SAAB 9-5 Aero (EPA 22 city/31 hwy), I got the best mileage ever last September, 35 mpg on a trip to Toronto. It was probably around 72°F...

Yeah, this guy my folks know just married this woman who rebuilds/collects classic muscle cars as a hobby... needless to say, she KNOWS how to change the oil! Furthermore, this lucky SOB recently got a VERY COOL birthday present from her--a Harley!!!

Yeah I'll second that vote for Redline MTL, I filled my '94 Civic gearbox with it back in '95. My cousin has that car now and I drove it last month. WOW! The thing still shifts smooth as butter.

Despite all the good UOAs, I wouldn't switch to a 5W-20 unless the manufacturer says it's safe to do so. Does GM even recommend this viscosity at all? Even Ford and Honda do not recommend this for all their vehicles. Rotella T Syn 5W-40 is a very good oil and I would have left that in...

ACDelco filters don't use the "clicker" type of bypass.

OK have a look at this picture: link The endcap has six little holes on top. The 4-pronged metal thing to the lower left sits on top of there and covers the little holes. See this picture. It's thought that the metal endcap will deform (where the pen is pressing down) in order to allow...

Greg, are you thinking of using Delvac 1/M1 T&SUV? I'm thinking of using that... I wonder how it does in the winter though. At 40°C, D1 is 102 cSt, thicker than what I've used before--M1 0W-40 is 80 cSt at that temp, and GC is only 68.5 cSt. Is that a big difference? Who's running D1 this...

Fantastic, nice to see lead=0 in both cases! Notice any changes in fuel economy?

Yeah, it's a darned shame that most of the UPF (Ultraguard Gold) line of filters were discontinued. I stocked up on some UPF53 and UPFL400A (oversize) filters for my car before they ran out. Anyone else want to petition ACDelco to resume production of these? Hey Patman, I found some...

Yep, and the Motorcraft has a silicone anti-drainback valve, which will last longer than the nitrile rubber valve used in the K&N. I'd rather use the Motorcraft and change it every 5,000 miles rather than use a single K&N for 10,000 miles or longer. Plus, the top-off at filter change will...

Yeah I just took apart a Supertech filter, it has the same bypass as the Bosch found at this site: http://members.aol.com/phundotcom/oil.htm It's really hard to deform the metal (fig 5); I'm very suspicious of this type of bypass.

Well if you check it the first thing in the morning, after an overnight sit, and BEFORE starting your engine, the dipstick is usually pretty accurate. (On some cars it'll read a touch lower than with hot oil.) But if you start up a cold engine and then shut it off before the oil gets nice and...

Fuggedaboutit! What you're doing is just fine. My folks drive 0.1 mi before jumping on the highway and their cars have no problems, even with super long OCIs... synthetic oil flows great in cold weather. Even with dino oil, just drive gently until the engine is up to temp.. My personal...

Give it a try! Dunno if this engine is related, but it worked well for G-Man II's Olds minivan (3.4L), UOA here. Harsh winter conditions, short-trip driving too. Only 1 ppm lead, and this is soon after a repaired intake gasket coolant leak! [ February 02, 2004, 03:26 PM: Message edited by...

Hey man, that's cool--also your plan sounds good. I think your Honda dealer made a good effort to check things out--I know mine wouldn't have done all that... my dealer even tried to scam me at 15,000 miles, claiming that the brake pads were completely worn out, when they weren't even 50% worn yet

Relax a bit, take a deep breath! This is only one analysis, a trend is more useful. For example, 3MP's M1 study showed 3.0% fuel at one point, and he wound up running that oil for a very long time. I think he chalked it up to sampling error. Your fuel economy of 24 mpg is fine, my Accord V6...

Just wondering, why the jump from Redline to US-made Syntec?