Roe Bag Posted October 30, 2013 Report Share Posted October 30, 2013 I have a new 40 horsepower Mercury four stroke. (March 2013) Mercury's 20W50 synthetic blend is $62.00 for 4 litres. Currently full synthetic Castrol Edge is on sale for $33.97 for 5 litres. Castrol claims there is no better protection on the market. Mercury claims there are special additives for better protection in a marine envirionment. Marketing ploy? Scam? Don't want to do anything that might void my warranty, but $15.50 a litre. Yikes! Thought I'd change all the fluids and stabilize my fuel system sometime next month. Wanna squeeze in a couple of more trips before the snow starts to fly. Would appreciate your thoughts. Thanks in advance, kwikfish. Link to comment Share on other sites More sharing options...
BillM Posted October 30, 2013 Report Share Posted October 30, 2013 Rotella T6 5w40 in our Yamaha F115. My buddy who's a mechanic for the Coast Guard says it will be just fine. I tend to trust what he says, lol. Mercury doesn't make their own oil, it's just rebranded.. There's no way I'd spend $15 a litre on oil for my friggin boat, lol! The engine is nothing special. Link to comment Share on other sites More sharing options...
Sinker Posted October 30, 2013 Report Share Posted October 30, 2013 Its cheaper to buy 2 stroke oil!! Yikes! S. Link to comment Share on other sites More sharing options...
OhioFisherman Posted October 30, 2013 Report Share Posted October 30, 2013 http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=cfrm Link to comment Share on other sites More sharing options...
captpierre Posted October 31, 2013 Report Share Posted October 31, 2013 I have a new 40 horsepower Mercury four stroke. (March 2013) Mercury's 20W50 synthetic blend is $62.00 for 4 litres. Currently full synthetic Castrol Edge is on sale for $33.97 for 5 litres. Castrol claims there is no better protection on the market. Mercury claims there are special additives for better protection in a marine envirionment. Marketing ploy? Scam? Don't want to do anything that might void my warranty, but $15.50 a litre. Yikes! Thought I'd change all the fluids and stabilize my fuel system sometime next month. Wanna squeeze in a couple of more trips before the snow starts to fly. Would appreciate your thoughts. Thanks in advance, kwikfish. I'm not sure you need to go synthetic, but I would definately go with a made for marine oil. Link to comment Share on other sites More sharing options...
DRIFTER_016 Posted October 31, 2013 Report Share Posted October 31, 2013 My new 115 Merc calls for 25/40 oil. Our water is so cold here the mechanic at the dealership here told me to use the 10/30. He also suggested that I use the Merc oil while under warranty just in case there is a motor issue. Once the warranty is up it will get Mobile 1 full synthetic just like all my other 4 stroke engines do. Link to comment Share on other sites More sharing options...
NANUK Posted October 31, 2013 Report Share Posted October 31, 2013 I have been using Mobil 1 full synthetic motor oil in my Yamaha since new ( 10 years ) no issues what so ever . In fact I think it's way better oil than Yamalube. Just make sure the oil is correct grade / weight as per your owners manual. Link to comment Share on other sites More sharing options...
Roe Bag Posted October 31, 2013 Author Report Share Posted October 31, 2013 My new 115 Merc calls for 25/40 oil.. Mine too. Guess I'll bite the bullet and stick with Mercury at least until the warranty expires. The money I'm saving on gas and two stroke oil pays more than the difference anyway. Hardly any point in cheapin' out. Appreciate the replies. Thanks, kwikfish. Link to comment Share on other sites More sharing options...
fishindevil Posted October 31, 2013 Report Share Posted October 31, 2013 mobil 1 10w30 synthetic in my 2011 yamaha 50hp four stroke Link to comment Share on other sites More sharing options...
wkrp Posted October 31, 2013 Report Share Posted October 31, 2013 I use Amsoil 10w30 in my 2001 50hp merc Link to comment Share on other sites More sharing options...
Garnet Posted October 31, 2013 Report Share Posted October 31, 2013 I had electronic issue with OMC that started before the warranty ran out and continue into the next season. After lot's of try's the solution was to change all 7 sensors for new. I was there when the call was made to OMC and the 1st ? was what kind of oil was used in this motor. So I use factory oil for the whole warranty period and for a year after. Link to comment Share on other sites More sharing options...
lookinforwalleye Posted October 31, 2013 Report Share Posted October 31, 2013 How much did the motor cost??? Use what merc says while under warranty...the last thing you want is them saying oh that oil you where using is not warranty approved. Link to comment Share on other sites More sharing options...
kickingfrog Posted October 31, 2013 Report Share Posted October 31, 2013 Exactly. I like to save a buck or two when I can as much as anybody but a motor can be 5, 10... 20 thousand dollars. Perspective. Link to comment Share on other sites More sharing options...
fish_fishburn Posted October 31, 2013 Report Share Posted October 31, 2013 As long as you use an oil that meets or exceeds their requirements your ok. They cant force you to use their over priced oil. Link to comment Share on other sites More sharing options...
BillM Posted October 31, 2013 Report Share Posted October 31, 2013 I'd love to see a company deny warranty service because someone didn't use 'their' oil. It's not like they make it anyway, it's just rebranded XX companies oil. Link to comment Share on other sites More sharing options...
Garnet Posted October 31, 2013 Report Share Posted October 31, 2013 Some people can waste all boating season answering questions about oil brand. You may get the warranty you will never get the time back. Link to comment Share on other sites More sharing options...
Salmonidstalker Posted October 31, 2013 Report Share Posted October 31, 2013 Don't go against manufacturers recommended oil. My boat calls for 8 liters of sae 10w30, 4 stroke honda 200. Doesn't have to be honda oil, just match the suggested rating. Bite the bullet, it's money very well spent. Oil is the life blood of the engine. Link to comment Share on other sites More sharing options...
lew Posted October 31, 2013 Report Share Posted October 31, 2013 I use all Yamaha oils & filters for my 150 four stroke. It's what I've used since the Yammie was new and I've never had an issue and besides, the dealer is only a few miles down the hiway so it's one stop shopping. Might cost me a few $$$$ more but it's only once a year and I know everything will be good. Link to comment Share on other sites More sharing options...
alexmedic Posted November 1, 2013 Report Share Posted November 1, 2013 I have been using Castrol Synthetic 10w30 in my 2004 50hp Merc 4 stroke for years now. Never an issue. It always go on sale at CTC. Link to comment Share on other sites More sharing options...
Ron Posted November 2, 2013 Report Share Posted November 2, 2013 Same as Lew, I use yami filters and yami lube. So what, it might cost say even 30.00 more. Money well spent in my opinion. Link to comment Share on other sites More sharing options...
kickingfrog Posted November 2, 2013 Report Share Posted November 2, 2013 If someone was looking to save a buck or two I'd recommend backing off of WOT a hair once up on plane then trying to save on oil. Link to comment Share on other sites More sharing options...
captpierre Posted November 2, 2013 Report Share Posted November 2, 2013 Same as Lew, I use yami filters and yami lube. So what, it might cost say even 30.00 more. Money well spent in my opinion. Agreed. Might be a bit more than $30 but not near as much as taking the Mrs out to dinner, once. Link to comment Share on other sites More sharing options...
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