We’ve been treating Herbie with fully synthetic engine oil ever since and we never had any issues with the motor, even though we traveled with a camper in tow through the most toughest regions on earth, just as deserts, mountains and jungles.
Adamol’s fully synthetic 10W-60 “Racing” is our actual favorite! And we are proud using engine oil by an Austrian company which was founded 1896 by the Austrian Adam’s family.
Herbie's World Tour 
Hey Henry,
Thanks for your comment!
We hope to get back on the road in winter again…
Air-cooled regards,
Domi & Zainab
Good to hear from you guys again.
If you can afford it (South Africa prices) nothing better than synthetic oils.
Keep well.
When are you touring again ?
Henry Green
0834606321
xhenryx@outlook.com