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My 2019 Accent with a 1.6 GDI and 6sp auto averages 40mpg+ and it makes 140hp and will pull a 0-100 of 8 secs. It's power to fuel consumption to ratio (so basically overall efficiency) surprised me since I was just after something cheap and cheerful. I think the fact small, basic economy cars...

The bottom ends will cop anything, but head work is absolutely necessary if you are venturing beyond stock outputs though. I've seen and heard of a few cases of the heads lifting from the block after a spirited sesh! This is the reason my brother in law wouldn't take his XR6T to the skids cause...

I knew it existed and never tried it until the other day, but the autos are designed to set off in second gear to avoid creeping and also to provide a gentler experience for the passengers. If you shift the lever down to '2' it sets off in 1st. I tried this out when I was at the front of the...

Cheers! And yes they are sheepskin covers. Cost the previous owners around $2k to have them custom made! I let her keep one for her ML500 so now I just have the driver's seat, arm rest, and have since found a matching steering wheel cover. They are great for keeping the temperature stable and...

Absolutely. In their final turbo form the XR6 Sprint was nudging 500hp + 480ft/lbs from factory

My previous and current daily driver have been I6s, it's one of my favourite layouts. I'm surprised the Mercedes M104 only got mentioned a couple of times, they have definitely got to be up there just aren't as popular or commonly accessible as other brands. I know of one with over 600k miles I...

Even the tiny NA 1.6 GDI in my Accent is the same, turns very dark, almost diesel engine levels, and reeks of fuel. Viscosity doesn't take too much of a hit so I know the fuel smell isn't extreme dilution, plus it gets driven for hours most days. The oil consumption issues in those Theta engines...

Through the galleries yes, but the oil on the heated internal components (valve train, pistons, cylinder walls) is not under pressure, and this is where viscosity is a factor in the rate at which it returns to the sump to be cooled. No one is worrying, I just had an contradictory observation...

That is some serious mileage. I have never personally seen damage caused by using thicker grades (20w50) although I can imagine it certainly would in colder climates. When working on my engines I've noticed that regardless of viscosity, the valve trains on all cars are designed to hold a bit of...

Well the theory is as I've read, that thinner oils cause less drag on internal parts, leading to higher engine efficiency and less heat production, and they also dissipate heat better as they flow faster, carrying the heat back to the sump. According to a few posts I've read on here some people...

Hello all, I've been experimenting a little bit with my W140. When I purchased it, it had Toyota 10W30 in the sump as the PO got it serviced at the local Toyota dealership. It was overfilled about a litre which is a big no-no on these M104s and it even says so on the fill cap. I sucked a bit...

I hear that a lot but it handles itself just fine. The gearing is short as it sits at around 3,000rpm on the highway, but these are programmed to set off in second gear and it accelerates fine. They only set off in first if you apply more than half-3/4 throttle from standstill and it takes off...

Btw the head gasket 'failures' on these almost always only leak oil externally. It can be lived with for as long as you can stand the mess on the garage floor and almost never leads to overheating or milkshaking, and as I mentioned even this can be remedied with a retorque. I feel that we are...

They are but from what I've read (by a Merc Tec too) they can be reused two or three times, not that I would. If I was to pull the head off I'd replace them though, or you can replace them in order one by one. In the correct order, loosen them up one at a time and then retorque to 55Nm. When...

Just a wee update. I retorqued the head bolts (55Nm +90+90) which almost completely stopped the oil leak. These M104 engines seem to famously leak through the head gasket externally at the back of the block where all the oil pressure goes through a single gallery. I read that a retorque will...

I have recently picked up a W140 with the same engine. When I first bought it the service records showed that it had received 10W30 at the local Toyota dealership, and they kindly WAY overfilled it which is a big no no on these engines, and it's not recommended to fill them past the halfway...

Ouch that's a shame! My last car that I really cared was totalled after someone pulled out in front of me. I'm quite paranoid about the same happening to this thing already! That's good reassuring news about it hopefully not having to be redecked each time. I guess growing up in the UK we had a...

I have read a bit about the head gaskets online! Seems hit and miss... People are either getting 300k+ miles without needing it done or it happens two or three times in that mileage. Hopefully the newer Elring gaskets are better. Would the head need shaving on such a long block or is it a case...

Thanks for the replies everyone I appreciate it! I may give the MoS2 a miss and save myself a few bucks but I really did like the way it made my old inline 6 Falcon feel... It does look like it has had a diet of synthetic given that it looks like new under the oil cap - not even a trace of...

Yes, or at least according to the MSDS and VOAs on here it's just SAE30 with a bit of molybdenum disulfide and a splash of boron... It really does say what they say it does but for it to be noticeable after adding it there does have to be some wear on the engine for it to make up the slack. It's...