(Molokai Island Specific)
0 messages
Updated
Lakes Online Forum
83,586 messages
Updated 4/16/2024 12:46:32 PM
Lakes Online Forum
5,193 messages
Updated 4/3/2024 3:47:36 AM
(Molokai Island Specific)
0 messages
Updated
Lakes Online Forum
4,169 messages
Updated 4/15/2024 11:05:05 PM
Lakes Online Forum
4,260 messages
Updated 3/24/2024 9:24:45 AM
Lakes Online Forum
2,976 messages
Updated 3/20/2024 11:53:43 PM
Lakes Online Forum
98 messages
Updated 4/15/2024 1:00:58 AM
|
|
|
| Name: |
Webmaster
- 
|
|
| Subject: |
Motor Oil Recommendation
|
|
Date:
|
9/6/2009 2:49:57 PM
|
When the manufacturer (Mercruiser in my case) suggests using "Mercruiser Brand Motor Oil", wouldn't any brand of the same grade (SAE approved) be just as good?
Also, what about oil filters? Brand preferences...
|
| Name: |
CAT BOAT
-
|
|
| Subject: |
A good reason.......
|
|
Date:
|
9/6/2009 3:22:37 PM
|
They request Merc. labeled because of the content of different engine oils. Not to make a long post but here is the deal. Some years back, most, if not all car AND marine engines had flat tappet camshafts. Those engines used regular old motor oil. Being the climate we are in, I think it is better to use a straight 40wt oil. Over the past several years the engine technology has changed, and internal oiling requirements are somewhat different. Most newer engines have "Roller" lifters and camshafts. These turn more freely and lifters do not "slide" against the camshaft. They simply roll along and offer more effeciant (spell check) production of power. They also have less drag and don't rob extra power to turn. Some oil manufacturers stopped putting zinc in there oils, because it was not neccessary for use with these new "Roller" valve trains. The zinc promoted even and constant wear on the older style flat tappet lifters. Zinc is not a factor in the newer engines with "roller" assem. Also, considering the operating temps of car and marine engines it is best to use a very high grade engine oil. Next time you drive your car, look at the engine temp. It'll prolly say 210+. Well, years ago that was HOT. The marine engine also runs around at 4,000 rpm plus, (your car engine rides around at 1,500 or less) it runs much cooler than that so make sure you use a good name brand oil. We like Valvoline VR1 40wt. Royal Purple, or Kendal. Aslo use Castrol from time to time. Just don't stop at the Zippy Mart and get that cheap stuff you see on the shelf. Sorry for the long post. This is my opinion only, and I base that on what I see here and information I have read and hands on knowledge I believe to be true. WHEW. I am going back to cooking.
|
| Name: |
Tall Cotton
-
|
|
| Subject: |
A good reason.......
|
|
Date:
|
9/8/2009 8:32:19 PM
|
What is your opinion of synthetics?
|
| Name: |
CAT BOAT
-
|
|
| Subject: |
A good reason.......
|
|
Date:
|
9/8/2009 8:53:45 PM
|
I like synthetics for the most part. They seem to break down a little quicker when you introduce gas or contaminents to it. I don't think they recover well to mishaps (excessive heat). I don't think they belong in most roller valve train engines, but that is ONLY an opinion that I have. I have actually seen roller lifters began to slide along on the lobes of roller camshafts because (in my opinion) the oil was simply too slick for the lifter to work properly and began to slide and create wear problems. However, some of the more advanced synthetic oils work just fine in that inviroment. (according to other sources). My suggestion! When you decide on a reputable shop to service your boat, simply sit down and chat with them about what there preference is on your particular boat. If they sway, and don't seem to be able to converse with you about it. Then your decision just got harder.
Respectfully,
Steve
|
| Name: |
LonghornBoater
-
|
|
| Subject: |
A good reason.......
|
|
Date:
|
9/9/2009 11:24:31 PM
|
I have been actively envolved in the motor vehicle service business for 39 years(Ford Heavy Truck Service Engineer, Mack Truck Branch Manager, Lincoln/Saab/Jaguar Service Director.) I became a convert to Mobile One in 2000. Since that time I have used it in every engine I have (lawn mower to 2001 Tahoe with 242000 miles.) When I purchased my first boat, a 2001 Larson with a 3.0 Mercruiser, I called Mercruiser in Oklahoma and talked to a Product Engineer. He stated that the reason Mercruiser recommends against synthetic oil is that, one they have done no studies in house to determine the ramifications of it's use in their engines, and secondly they do not sell a synthetic private branded as Mercury lube. He further stated that his opinion was that the increased protection affored by Mobile One would certainly nor be detrimental to the operation of the engine. I also use Delco OEM filters as opposed to Mercury. My reasoning is that the engine is basically a GM derivitive and Delco is ofcourse a devision of GM. One last comment. At 240000+ miles I have NONE of the all to common tappet or timing chain noise present in most 5.3 ltr. GM engines.
Sorry about the misspelled words-no spell check on the forem.
Call me if I you like
Ed Carman 800-692-2719
|
|
|
New Post
Search
Boat Maintenance Forum
Reply
»
Hawaii Coast
»
Molokai Island
Login
|
Home
