07-20-2012, 04:16 AM
Join Date: May 2010
Location: Ponte Vedra Beach, FL / London, UK
My Ride: Jaguar XKE
| Leather covered steering wheel:
Steering wheels have an extra coating of protective finish on the already finished or coated leather. Perspiration and dirt are absorbed readily into the dry leather, and combined with the ultra violet (UV-B) radiation of the sun a chemical reaction occurs that degrades the finished leather. All of us have seen this wear on steering wheels
A finished leather steering wheel is protected with a urethane clear top coat. UV heat will allow any dirt / grease to become imbedded and the surface becomes more soiled the abrasive dirt / grit produces a shine.
Using leather oil-based conditioners on finished leather may cause delamination from the leather substrate. As the oils will permeate the leather via the stitching or any micro-cracks in the surface, once oil gets between the urethane and the substrate it causes loss of adhesion (See also Oil and Oil based Products)
Most manufacturer's advice against using oil-based conditioners on steering wheels as it makes the surface slippery and could be dangerous if you lose control of the vehicles steering
I think the 'white spots' are oils tha have not permeated the finish and have dried up.
To remove the fine scratches use a 3M delicate duty scuff pad (White)using light medium pressure
1. Clean the wheel's leather surface with a leather cleaner (Leather Masters***8482; Strong Effect Cleaner ) or a Limonen (citrus) based de-greaser (P21S Total Auto Wash) diluted 5:1 with warm distilled water in a spray bottle; dependant upon type and extent of soil or stain
2. For oil or grease stains use Leather Masters***8482; Leather Degreaser (check for colour fastness) this aerosol product is ideal for cleaning this type of stain as it dissolves the oils and transforms them into a powder that is more absorbent than the leather.
This powder is what is wiped off, cleaning and degreasing the leather. Allow the white powder to dry fully. If the powder is drying to a yellow colour, it means that there are still a lot of oils in the leather.
Using a Medium / hard horse hair brush, or a soft sponge, spray and work the cleaner into a foam, lightly scrub surface and immediately wipe with a terry towel to remove excess moisture, especially around stitching (you may need to repeat this process).
3. Once wheel is thoroughly dry apply Leather Masters***8482; Leather Protection
I hope the information is of some help to you. If you have any further questions please let me know
Last edited by TOGWT; 07-20-2012 at 04:17 AM.