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Okay so I’m installing an aftermarket oil pressure sensor/gauge. The pressure sensor reads absolute pressure, from 0 psi to 145 psi. With the gauge it’s possible to calibrate it so it reads 0 psi at sea level, as opposed to 14.7 psi. My question is when I’m at altitude say 7000 feet, will the...

I'm trying to replaced cracked, but still sealed CV boots on a 2010 Civic Si (K20 engine). I usually replace rubber parts with OEM brand, but OEM CV boots for this car are discontinued. So what brand have you found last a good amount of time before cracking? NAPA boots any good? Thanks.

The engine in question is a DOHC 2.0L in a 2010 Civic Si. Every time I change the oil I get this rattle during low speed driving at around 2500 RPM, and when changing gears; when I re-engage the clutch. It happens when the engine is cold, and with new oil. After the oil has been in the engine...

So I need to do a full brake service (rotors, pads, fluid) on my car, and I chose Centric Premium plain rotors. But when I got them I saw that they were made in China. Nothing againts China, but I would preffer brakes made in the US/Europe/Japan. So I ordered some EBC Premium plain rotors. When...

I scratched my spark plugs' ground electrode using the gaping tool. The one with the wire. Are they safe to use? Will they cause hot spots and knock/detonation/pre-ignition? I sanded the outside of the ground electrode a little bit to remove the sharp edges from the scratches, but there are...

Working underneath a car is no joke. You're literally looking at death in the face. My question is, would putting tires underneath the car work as a last ditch fail safe? Would you need the wheel with the tire, or would a tire on its own work? I have never had an accident, but it is quite scary...

I work at UPS, and we use this liquid that we spray on slides and other surfaces to prevent packages from getting jammed, and just generally makes things run smoothly. I want to find out what it is. It's milky and watery, but once it dries it leaves a very slick surface. It has a lemon/citrus...

Just out of curiosity, can anyone tell me what these oils are made out of? I've heard the MSDS can tell you if they're GIII, PAO, Ester, etc. BTW I don't plan on running any of these oils. They're just too pricey, and I'm perfectly happy with PU, but I just want to see if the composition...

The maintance schedule for my 2010 Civic Si says the oil filter should only be changed every other oil change. We've all been groomed to think that you should always change the oil and filter simultaneously, but is it really better? Or is it better to leave the filter in there and prevent the...

The 2.0L engine in this cars revs up to 8K rpm, and the recommended octane is 91. What do you think about using PYB on this car. 90% of the time I drive pretty sedately, but I do most of my driving in the city. I follow the OCI minder on the car, which for me turns out to be 6000 miles. And the...

Let's say you have a car that will consume oil X brand, but not with Y brand. Would it not be better to use X brand, because even if it consumes, you're putting in fresh oil every so often?

My car will be due for an oil change pretty soon, and I want to get some input from you guys. So... 1. What kind of vehicle you have 2010 Honda Civic Si. K20Z3 engine with a 8000 RPM redline. 2. What your owner's manual says -- not just viscosity, but certifications (look for acronyms like API...

I recently picked up a case of Toyota's 5W30 oil (API SM, GF4) for my mom's car ('95 Corolla, 1.6 4AE-FE, 3 quart sump). 12 quarts for $24. Pretty good deal, but I don't know how long this oil will last. The manual for this car calls for a 7.5K/12 month OCI. But I don't know if that would be too...

Which one is the better detergent? I know there probably won't be a simple answer to this, but I've always wondered why some oils have like 3400 PPM of calcium and almost no magnesium, and others will have like 1200 PPM of calcium and 900 PPM of magnesium (total 2200 PPM)? How exactly do they...

I found some cool videos that I though us oil nerds would enjoy. Enjoy and discuss. Motul vs Mobil 1 on a 95 Camaro LT1 http://www.youtube.com/watch?v=3cChm-dqZts Motul vs Royal Purple on a Lexus SC430 http://www.youtube.com/watch?v=wL6rwuizjhA Motul vs Mobil vs Castrol Edge vs Royal Purple...

I'm looking for suggestions on what could be wrong with my car. Let me describe the symptoms for you. If the car has been sitting in the cold for a while, the car will crank fine, but it fires up slowly. Like it wants stall. This also happens if I disconnect and reconnect the battery. If...

I just took this thing off my 06 tc, and I must say, you get what you pay for here. At first glance it looks like a K&N filter, but it's not. For starters the filter media is synthetic, whereas the K&N filter still uses cellulose. The TRD has a metal wire mesh to help support the filter media...

First here's the TSB in question: www.greenhybrid.com/discuss/attachments/f58/967d1228919408-winter-fuel-efficiency-toyota_tsb071002.pdf What do you guys think. Should I switch to a 20 weight oil for my 2AZ-FE engine? The part that confuses me is that the TSB first tells you to use what is...

As a lot of you know Motul 300V smells like banana juice. This is one of the few oils that is pretty much fully ester based. I was changing my oil today, and I noticed that I still had a bottle of Motul 8100 Eco-nergy with a little bit of oil still left in it. Curious, I took a sniff and it...

I replaced my rotors and pads on my Scion tC. Went with Brembo plain rotos, and Axxis Ultimate performance pads. So far I haven't felt any problems with this new set up, but one of the Brembo rotors did have a couple small nicks on the rotor surface. Looked more like casting flaws, about .05...