Mobil-1 5W-40 for GS 1200?

[ragtoplvr]

I put in 5W40 rotella about october and go back to 20W50 in April. I have run 20W50 year round, but cranks sluggish and just does not feel right in the winter for a few miles.

Rod

[roger 04 rt]

Originally Posted by def

Goooooooolly fellas, you've already done my work for me.

Remember too, 5w-40 HDEOs (Diesel engine oils like Rotella, Delo and Delvac) are excellent choices in winter temperatures. They are relatively low cost and will last through the winter just in time to be changed when next summer rolls around. I like the HDEOs because they clean so well and have very stout ad packs. Also, pumpability is very good at cold start.

What about ZDDP levels and non-roller lifters? How much ZDDP do we 1100 and 1150 riders need?

Mobil 1 Oil Data Table

[def]

ZDDP levels in engine oils have been reduced over the years in favor of protecting the health of the catalytic converters found on today's automobiles and motorcycles.

In order to keep protection levels equal in the face of diminished ZDDP, oils now contain other EP additives as well as improved friction modifiers. Also, our boxers have rather mild valve spring pressure and as such, cam followers and cam lobe surfaces need little ZDDP.

I prefer motor oils with increased anti shear properties to oils with high levels of ZDDP.

[def]

Originally Posted by ragtoplvr

I put in 5W40 rotella about october and go back to 20W50 in April. I have run 20W50 year round, but cranks sluggish and just does not feel right in the winter for a few miles.

Rod

Good practice.