I may have saved my 4x4 from breakdown with this easy to use test kit, and the laboratory results were comprehensive and easy to understand.

Results indicated high levels of silicon which on closer inspection I found to be caused by a cracked intake manifold. Easy fix so thank you Roktex.

Approximate cost: $35

I've rated as excellent in all categories as they delivered everything as promised and I am not aware of any other companies offering a free engine oil sampling kit along with comprehensive laboratory engine oil analysis services to individuals.

The sampling kit was simple to use and easily disposable and I found the maintenance recommendations useful. I am now more comfortable extending my service intervals knowing that my oil is still performing and has lower than expected wear metals and almost no contaminants. Thanks guys I intend to test every 5,000km from now on.

Approximate cost: $35