8,792 reputation
11129
bio website infosecfrog.blogspot.com
location Scotland, United Kingdom
age 43
visits member for 3 years, 5 months
seen 2 days ago
  • 2006 Litchfield Subaru Forester 2.5STi
  • 2000 Subaru Impreza turbo PPP

Certified petrolhead - long time Subaru owner, mostly high specced (PPP, STi or other performance mods) and will race anything with an engine.

Have been monkeying around with engines since the late eighties.


May
22
comment Does repeated turning on/off Xenon HID headlights harm them?
They shouldn't ever need to be replaced - in the lifespan of the car. That is one of the key benefits of HIDs - they don't get that thermal shock wear that ordinary bulbs get.
May
19
comment How are digital speedometer readings typically calculated?
The tyre pressure does impair the readings, which is one of the reasons all speedos over estimate the speed: legally it is easier for them to say as long as the speedo is at or below the limit your actual should Bree below there limit. The actual variance will depend on the headroom the manufacturer built in.
May
18
comment Synthetic Oil and oil change frequency
To be fair, though, If he flushes and uses synthetic on next oil change, 5000 miles will still just produce 5000 miles worth of contaminants. I'd be pretty happy with that, as long as the 5000 miles doesn't end up taking years :-)
May
17
comment What is the point of HID lamps?
Theoretically they should last longer as well. On my car they are expected to never need replacing during the car's lifespan.
May
5
comment Noise in stereo that changes pitch with engine RPM
Good point - I hadn't even thought of ground loops in this context. +1
May
3
comment Do products like Redex work?
I'm guessing you mean just their cleaning products? I use a Redex octane booster when I can't get suitable petrol - it really works but is probably not what you mean.
May
2
comment How much longer than a copper plug will an iridium plug last (on average)?
@MDT - that change works for me. Would agree it is now a different question.
May
2
comment How much longer than a copper plug will an iridium plug last (on average)?
I think it is a duplicate of the one you linked to, unless you are asking something different?
Apr
26
comment Motorcycle starter sometimes clicks, but doesn't start - tapping with hammer helps it start
true, although the mechanics I spoke to when I had a car that required the odd application of blunt force said at this stage it is often best to just get a whole new starter.
Apr
12
comment When given a choice between octane 89 and 93, which should I choose?
Yep, Subaru manual and the garage guys. For the older Subaru I have a manual process I can carry out at home to retune, but the Litchfield requires ECU work.
Apr
5
comment Where'd my heat go?
Interesting question - my car heater has started to get cooler. On a good run I get full temperature, but if I am parked with the engine running and the heater on full, it cools right down to near ambient temperature.
Mar
14
comment Usability of Unused Winter Tires
And especially with winter tyres, they are designed for low temperatures - the rubber compound lasts even less time than an ordinary tyre at warmer temperatures.
Mar
12
comment Engine Bogs down with A/C or Defroster On
compressors - some are electrical, some mechanical. I'm prepared to believe you when you say that in this case it is mechanical. The alternator must supply current to the battery and the engine - if this is too low, the engine can lose power/idle speed.
Mar
12
comment Engine Bogs down with A/C or Defroster On
updated for you.
Mar
11
comment Diagnostic, diy repair guides, technical manuals
Most of these are manufacturer specific and not shared with anyone other than approved service centres, so I'm not sure whether you will get many useful answers to this one.
Mar
9
comment Why don't my wipers clean the windshield very well?
you should change wipers or at least wash them well and rub them with a rain-X soaked tissue. That should help. In general, with Rain-X you shouldn't need to use wipers at all for a while - that's the general idea.
Mar
1
comment Why do head gaskets fail in diesel engines?
That all depends - the longer the gasket survived, the more chance something else happened, but I have had head gaskets fail with no other damage to the engine, just to cooling components or hoses.
Feb
28
comment Fuel efficiency and altitude
hmmm - interesting. I have to admit the link between power and mpg may not be direct. I get a dramatic difference in power but didn't check mpg at the same time. Your ECU may do something relatively intelligent
Feb
21
comment Removing front panel to install new stereo? (Toyota Levin 97)
If you pop this as an answer you can accept your own answer - gives you rep points, and lets this question live in the 'answered' pile.
Feb
7
comment Why use a car battery charger?
This is especially true through cold winters