1978 R100/7 recommended Spark Plug ? / Recommended Oil - Synthetic? Regular? Brand?
I am in Ohio, where currently it is frigid and cold, and am wondering what some of you think about:
What is the current number(s), Brand(s) that are most recommended for reliability for spark plugs?
Do people use/recommend various heat ranges? If so, under what circumstances do I use which one?
Also what oils are most recommended?
Is is OK to switch completely to synthetic.
I just got back into the BMW family, and way back when (late 70's, early 80's) on the /5 bikes, the consensus opinion was to avoid any synthetics, but I suspect their apprehensions were unfounded simply because synthetics were new on the scene.
However, now, with the latest advances in synthetic technology I would guess that some have tried and now swear by some form of synthetic oil. What brand/viscosity?
BTW, I have read the oil report, and found it not very helpful. I suspect that some of you have some valued experiential knowledge.
What do you suggest for both of these questions?