Thanks gmcraft. The nurse advised me yesterday, not to apply 4 hours less before rads. After applying it last night, I see what you mean on eggs frying in butter, that is some thick stuff.
I'm fortunate with my commute to the hospital, only 4 miles away. So I'll apply as soon as I get home, so I don't lube up my steering wheel with my greasy hands!
I'm just in the waiting area now, for my second treatment.

Enlarged left cervical lymph node in neck on 1/9/18. Male, age 60. Had retired from working as a computer technician and a project manager for almost 38 years, on 7/1/17.
Node was removed 1/16/18 and found to have SCC P16.
Chest xray clean.
Since then, PET/CT, slight activity left parotid, possible malignancy left lingual tonsil. MRI clean.
3 endoscopies, nothing seen.
2/26/18 Larryngoscopy,primary not found.
TORS 3/23/18 lingual tonsil biopsy.,biopsy negative.
Chemo/rads started 4/18/18.