Catalina - Capri - 25s International Assocaition Logo(2006)  
Assn Members Area · Join
h.jpg Home.
a.jpg Association Forum
s.jpg Ships Store
c.jpg Cruising
r.jpg Racing
t.jpg Technical Tips
g.jpg Photo Gallery - New
o.jpg Boat Search - Updated
m.jpg Manuals & Brochures
3rdrpt.jpg Swap Meet
l.jpg Links
f.jpg Officer Flag Line & Staff
b.jpg Bylaws & Constitution
 
1.jpg Members Area
1.jpg Join the Association
 
Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
 
Association Forum
Association Forum
Home | Profile | Register | Active Topics | Forum Users | Search | FAQ
Username:
 Password:
Save Password
Forgot your Password?

 All Forums
 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 Any downsides to using blended oil on the outboard		  New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

vdotmatrix
Navigator

Member Avatar

USA
139 Posts
Initially Posted - 07/26/2019 :  06:26:21  Show Profile  Reply with Quote
They were out of regular marine 10-40w motor oil at west marine and i picked up the blended... will have to change oil out anyway on the new motor..

Any downsides to using a blend?

islander
Master Marine Consultant

Members Avatar

USA
3992 Posts
Response Posted - 07/26/2019 :  06:56:19  Show Profile  Reply with Quote
No downside but since it uses a quart or less I always use full synthetic. Also it doesn't have to be bought at a marine store. You can buy oil from an auto parts store as long as the oil meets the viscosity and the API numbers required by the engine.
Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound


Go to Top of Page

glivs
Admiral

Members Avatar

USA
822 Posts
Response Posted - 07/26/2019 :  12:39:26  Show Profile  Reply with Quote
My Mercury Owners Manual does not recommend the use of synthetic oil...but I don't recall the explanation if any. ??? I'll check when I get a chance.
Gerry & Leslie; Malletts Bay, VT
"Great Escape" 1989 C-25 SR/WK #5972
Edited by - glivs on 07/26/2019 12:40:28
Go to Top of Page

GaryB
Master Marine Consultant

Members Avatar

USA
4275 Posts
Response Posted - 07/26/2019 :  16:09:53  Show Profile  Reply with Quote
You shouldn't use synthetic oil in any engine until it's completely broken-in (unless the owners manual says it's OK). If you use it too early there's a possibility the rings will never seat and you will have higher than normal oil consumption.

Association Member

GaryB
Andiamo
'89 SR/WK #5862
Kemah,TX
Go to Top of Page

islander
Master Marine Consultant

Members Avatar

USA
3992 Posts
Response Posted - 07/26/2019 :  17:22:53  Show Profile  Reply with Quote
If it's an older engine and you always used conventional oil then stay with that. Some say changing an older engine to synthetic could cause oil leaks due to it's cleaning ability. I don't know how true that is.
Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound


Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Association Forum © since 1999 Catalina Capri 25s International Association Go To Top Of Page
Powered By: Snitz Forums 2000 Version 3.4.06
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.