If they do void my warranty they better rewrite there manuals because it states in all of them 80F 60w oil is good. I'm not arguing or disagreeing with you. It's just you read this and that chemists reports and you really get confused. I'm not a new rider buy no means been riding harleys since 1971. They say synthetic leaves a better film that multi grades are not consitent. You may be putting in a 20w50 but these chemists says that they may reach weights way over 50 and passing 60 weight. Again don't think I'm trying to argue with you, I'm just confused over what all I read. Like I said Synthetics are suppose to give this great film, multi grades are not consistent and when they break down you only have whatever the lowest number that your oil is graded. Straight weight is bad on cold starts. My brain is going to explode. I think I'll stay with 60w in june, july and august and then change back to multi for the cold months. Oh by the way we have had a couple of weeks here in june with temps in the 105s. Thanks again for listening or reading LOL
Just for purposes of clairification so everyone knows..... the "W" in 20w50 does NOT stand for weight...rather...'winter' and thus the applicable viscocity rating of said (standard) temp.
this is a common missnomer alot of folks make and can cause confussion.
As I have read some of the reports from the chemists that even though the oil is labled 20W50W that the top end is not always consistant. That they have done reports on oils going far past the 50W labled. This is why I prefer a straight weight oil over the multi viscosity oils. If the 20W50 breaks down to the original 20W that is all you are running in the engine. People tell me they wouldn't run a straight 60W in there engine due to lubrication on cold starts. But you would take a chance and run 20W in a 95 degree day because you didn't know that the oil was breaking down? I would rather lower it as it got colder myself instead of depending on something that is suppose to happen and you have no way of knowing that it did or is still doing so. This is just my opinion, I'm not trying to argue a point again just my belief.
Re: Motor oil for tropical application 
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