I've searched the forum already, but still have a couple of questions. I plan on using diesel giant's step by step instructions on diagnosing / changing glow plugs.

I don't know if my 82 300td has loop or pencil style gp's, and I don't know enough about them to visually tell the difference. I need to order new plugs and knowing which ones to get would be nice.

Also, any good websites to order the plugs from? I read recently that diesel giant is MIA...I want to avoid Mercedes Benz of San Diego charging $30/ plug or something ridiculous.