Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
BAIT956

4 stroke engine oil

3 posts in this topic

I have a 2001 Yamaha 80 hp 4 stoke. Always have used Yamalube 4 stroke oil as the owners manual recommends.

What is the difference between 4 stroke oil and regular 10-30 or 10-40?

Can I use the regular stuff safely? It is less expensive.

Share this post


Link to post
Share on other sites

Different additive package. Same applies to motorcycle oils (vs auto oil). Auto oils aren't normally NMMA FC-W certified, which your 4 stroke marine oil probably is.

Share this post


Link to post
Share on other sites

FC-W 4-stroke marine motor oils are very different from automotive oils - very different additives. Marine engines run much cooler, rev up to much higher rpms and rev up extremely fast. Marine engine oils will have much better anti-foaming additives, better extreme wear additives, better corrosion inhibiters, etc.

I believe most marine 4-stroke oils are synthetic or synthetic blends.

AMSOIL does have the FC-W in 10W-30 and 10W-40.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • The past week has had me having multiple close calls and missing a brute at 45 yards.  Tonight I talked my dad to give it another try and there were birds in the field when we got there.  Birds ended up leaving as we tried to sneak in.  A short 20 minutes later they were back and we watched and worked the big group of toms and hens for more than 2 hours before we got one to commit.  Dad shot him with his 20 gauge at 48 yards,(this thing shoots an awesome pattern).  The 3 year old was down and only flopped a few times.   Nice 1+ inch spurs, 10" beard and heavy.  A good evening for sure!
    • Sorry to disappoint guys, but this tom was not my first bird of the season. Apparently that's part of the rules. The score won't count towards the team. I don't have any measurements for the jake I shot so we will have a zero from me.    At least my freezer is full. 
    • Way to  go 1957 !! Congrats!!
    • sugar is not a drug. 
    • Another good day today out on Superior ,,,, Had my first double and triple in the new rig today ,,, the day didnt start out with perfect weather but the fishing more then made up for it ,,, The mud  covers a lot of water but fishing the tea  colored water and edges of the mud paid off ,,, the cohos grew 5 inches  from eating this years smelt,,,, had some go 23 inches today 
    • Say no to drugs, like sugar.  Yes, sugar is a drug.
    • I won't be able to post the scores for this week until maybe Wed. so if someone else wishes to do so feel free to do it. In fact for the entire summer season I'm going to be pretty much hit and miss. So don't count on me the lake is calling and I have no computer there. My scores will drop like a rock unless luck prevails.
    • That should make things interesting 
  • Our Sponsors