Thread: More discussion on I/O motor oil
View Single Post
  #2   Report Post  
posted to alt.boats,rec.boats,rec.boats.cruising
Eisboch Eisboch is offline
external usenet poster
  
First recorded activity by BoatBanter: Jul 2006
Posts: 1,445
Default More discussion on I/O motor oil

"Mark" wrote in message
...
I have heard and read (in earlier postings) straight 30W oil is good to
use, and others recommend 25W40. I have an 1986 350 I/O and have been
using the 25W40 for several years, but am now wondering if I can or should
use straight 30W oil? Did they even have 25W40 back in 86, or is this an
improvement over alternatives?

Mark
The Rail, Canopy, & LifeLine Hook guy
www.ripnet.com/vtf/prod03.htm


My understanding is that some of the newer I/O engines based on the GM 350
block come with muti-viscosity oil recommendations. Those of your vintage
call for straight 30 weight, IIRC.

Eisboch


Reply With QuoteReply With Quote