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Isuzu Trooper 2002, ~100,000 miles. In good shape, runs and idles normally - idles a bit high though(~1000rpm?). I've been fighting an EGR insufficient flow code forever. Replaced EGR, cleaned input and output tubes thoroughly, cleaned TB thoroughly, removed and cleaned intake plenum THOROUGHLY...

Car is new to me so I sent in a sample to see how the engine is doing. Happy with the results. But what oil is this? Mobil1 5w30 perhaps? Code: MI/HR on Oil 4000 MI/HR on Unit 115500 Sample Date 9/23/2015 Make Up Oil Added 0 qts ALUMINUM 2 CHROMIUM 0...

At least 60 hours of high-revving battering on this Volvo redblock 2.3 engine, along with intermittent months of storage in a field. Oil was in the car for one year, including the ~9 days of racing. We burned about 20 gallons of leaded fuel in the first race, and then none in the subsequent 3...

I've seen two methods for getting air out of clutch lines and slave cylinder on newer model Mustangs. Apparently the problem is that the slave bleeder screw is buried inside the bell housing and inaccessible so these weird (to me at least) methods are necessary. #1...

1989 Chevy C2500 pickup, front discs, rear drums. Bled brake fluid recently, front pads good, have not opened rear drums so don't know. Normal braking is fine, usually everything works great. But occasionally when I've had to do rather quick hard braking I have found that there is not much...

Picked up an old C2500 with 240k, runs great. Failed smog due to way high HC (~230 when max is 96). Passed on CO and NO. Tester recommended adding a new catalytic converter. Apparently a shop will do it for ~$300 but I kinda want to do it myself. So, the question is which one do I need? A...

Ok, I want a car for #1: track days, #2: fun to work on and modify, #3: taking the family out for a spin on twisty Hwy1 roads on the California coast. It has to have back seats (for two small kids), preferably either a large sunroof or convertible roof of some kind, and be relatively amenable to...

Would you buy this car if the price was good and the repairs look good? What's a good way to tell if suspension has been messed up? Put it on an alignment computer?

Mixed 2.5 qts Castrol GTX 5w20 with 1 qt G-Oil 5w30 (older formula) and the results look quite nice. Bosch filter. 2009 Honda Fit, driven on long easy highway commute in moderate climate. Feel free to link this report when people say mixing oils is a stupid idea! Code: Mileage 80k...

Wife's Fit (2009 base MT, 80k miles) is making more and more noise at idle. Car runs fine and gets 38mpg. I don't drive it much so just recently noticed it making more noise than usual when she pulled into the driveway while I was standing there. Has already had the lost motion spring (LMS)...

Mounted the Frantz filter on this engine for two purposes: 1) clean out debris from engine rebuild and spun bearing, and coke (aka "turbo turds") built up during sludge issues from general neglect by previous owner; and 2) to increase oil capacity and cooling when hot (has low oil pressure...

I've posted many times on this particular project car. Has low overall oil pressure but runs well. Probably because of bearing wear. My question is: how bad is this? Vids below show hot oil pressure is almost instantaneous when starting after being off for ~5min. The second video shows when...

plugs are left-right cyl 1-4 (left closest to timing belt, passenger side). Cyl #4 plug is almost completely covered in gunk, the pic was taken after I tried to clean it off. That stuff is hard and baked on. This car has some significant and increasing oil consumption. It has been getting...

Soliciting oil recommendations for a 2001 Passat 1.8 turbo that triggers the low oil pressure warning at hot idle. Ideally this oil would be able to bump up the hot idle oil pressure (in comparison to the OEM spec 30-40 weight synthetics) which is going to increase in the near future with the...

2001 VW 1.8T (Passat AUG) with 174k miles. As you can see, lots of carbon buildup, and small dents from valve contact. What should I do here, scrub as much as I can off without letting debris get into the ring area and hope it doesn't scour the cylinder walls? The rings have already been...

This is a failed (AUG engine code) 1.8t VW engine that apparently spun a cam bearing (noticed when I removed cams) and siezed the top end and shut down the engine. No apparent timing belt damage or misalignment. From what the previous owner said this is probably the 4th 10k OCI with PYB 5-30...

zanzabar blend (= G-Oil augmented with some HDEO) comes through with flying colors! This fill was 7qts G-Oil 5w30 + 1qt Castrol GTX 15w40 diesel Code: Mileage 150k 180k OCI 10k 10k Oil M1 0-40 zanzabar blend ALUMINUM 5 7 CHROMIUM 1 0 IRON...

So, VW Jetta front wheel drive - just rotated tires. Passenger front is brand new replacement from a blow-out. Other three including drivers front are older (same size) and worn approx 75%. The difference in diameter is noticeable in that the car tracks slightly differently (more left biased...

I'd say we have a winner! Castrol Edge Syntec 5-20, first run on this brand in the engine and it appears to be doing quite well - dare I say superior to the M1 oils previously used? I understand it's not really fair to say that what with break-in and all the other factors involved. Anyway, I did...

Fourth UOA on G-Oil from my 2002 Passat 1.8T. Driving is mostly short trips with occasional 15-50 mile weekly jaunts. All four samples were taken from drain plug on the sump and less than 1qt was drained in total each time, sump capacity is 4qts so that amounts to 25% replacement each sample...