Editorial policy
How The Pcheen Desk chooses its questions, works from sources, uses AI tools in drafting, draws its figures and corrects its guides.
Last revised
This page describes how Pcheen’s guides are made, from the question to the corrections. It applies to every guide on the website.
Choosing a question
Each guide answers one general question that many car owners ask, such as how to keep a car clean or what a part of the car does. We choose questions whose answer holds wherever the reader lives, and we write for any car, not for one make or model.
Working from sources
We start from car makers’ owner’s manuals, which are the documents written for each car, and from the care guides of makers of tyres, wipers and paint finishes. Each guide lists the pages it relies on and the date we read them. When sources disagree, or a manual gives a figure that holds only for its own model, we say so and send you to your own manual.
Figures and ranges
Intervals and quantities that depend on the car, the climate or the product are given as typical ranges and labelled as typical. When a number comes from one source, the guide says which. Products are described by type and by what they do to a surface, never by brand, and we rank nothing.
How guides are written
Our guides are researched, drafted and reviewed with AI tools. Before a guide is published, its facts are checked against the sources it cites, and the whole guide goes through a separate review step. We do not test products and do not claim to have done so.
Figures and drawings
Every drawing on Pcheen is made for the guide it illustrates, in the website’s own flat style. We use no photographs, and the drawings show no particular make or model.
What stays out
Work that belongs to a qualified mechanic or a body shop is named as such and not explained. Pcheen sells nothing, names no product as better than another and does not take payment for what it writes.
Corrections and updates
When a source changes or a reader shows us an error, we correct the guide and show the date of the change next to the date it was first published. To report an error, write to contact@pcheen.com with the page’s address and the line in question.
Advertising and the text
Advertising pays for the website. It is kept apart from the guides and has no influence on which questions we answer or what we write, as the advertising disclosure explains.