It can be done if you possess specials electrical/computer equipment. There are web-sites offering this as a service. I will not link to them as it is generally only done for nefarious purposes (winding the mileage back to make the car sell for more).
However it is not actually illegal to adjust an odometer in some jurisdictions, as there is always the possibility of buying a second hand instrument pack/speedo and having the mileage reading on it altered to match the actual on the car it is then fitted to.
On most cars, you cannot change it without some special tools ... or something. However, when the speedometer fell of my 91 Toyota Tercel (I mean, serously, It fell off!!!!) I took off the wheel, the dash cover, and then broke the side of the plastic cover to put it back on. I could have adjusted the mileage from there, but at 149000, it didn't seem worth it. And its highly illegal.
(the above would seem to refer to older vehicles that had a mechanical odometer that could easily be changed using a small screwdriver to move the wheels, rather than more moden LCD speedometers that were developed to prevent this.)
in the fuse box
You need to have it checked for codes.
Not possible to determine. No records, Astra is out of business.
We have a 2005 Astra AH model with the Opel motor, apparently Repco do not stock the required Oil, it's a fully synthetic oil that is very light. Holden have it at $30 per/L and is Red in colour. I have been told by a number of people now not to mix these oils and to use the recommended oil for the car, so I am about to take a trip myself to holden.
What model mate? A 2007 LX 4X4 Holden Rodeo
The car model Astra produced by Vauxhall has received mixed reviews from drivers. On a scale of one to five the Vauxhall Astra model receives between three and four as rating.
The Holden Monaro was intoduced in 1968, with the HK model.
Generally if your model has that option available, the harness includes the plug=ins. Look for them tucked up out of the way perhaps with protectors attached.
I think only possible role model for Holden is Mr.Antollini his English teacher he is not afraid to go to his house and to talk with him.
Hi! 2004 astra 1.4 16 valve enjoy model is an egr valve fitted to this model? (enjoy) thanks