Amsoil 15-40W Marine syn oil
 

What's the general consensus on this stuff. I have a source who can get it for me CHEAPER than I can buy Mobil 1 ! I just don't anything about it. Hydrocruiser, what's scoop there oil guru! :D
Thanks,
Dean

Re: Amsoil 15-40W Marine syn oil
 

I used it for years and had no oil related problems. Only gave it up when cost (and related freight costs) and availability became a hassle. If the cost was reasonable and it was easy to come by, I would probably go back. (sorry Hydro, but I still think that Amsoil has some great products and they WERE one of the pioneers in the synthetic lube field) --- Jer

Re: Amsoil 15-40W Marine syn oil
 

i use it for the winter months, or for winterizing, i can buy it for $4.00 a quart verses $6.00 for 20-50 i have about 10 psi less oil pressure with the 15-40 thats the only thing i have noticed.
oh and i use Amsoil everything never had the slightest prob :D:

Re: Amsoil 15-40W Marine syn oil
 

15W-40 Amsoil is good juice especially if you can get a good deal on it.

The Amsoil Series 2000 20W-50 Racing is what i would use in an offshore if running hard or with hopped up mills.

Re: Amsoil 15-40W Marine syn oil
 

I used it the last 3 years in my HP500's.

Changed valve sprngs and lifters at 250 hrs.

No sign of lifter "flat spotting" on either engines.

Would use some oil after 10 hrs on the oil,
but nothing major.

I have 575sci's now, and use 20w50 Amsoil,
25 hrs. on the oil, hasn't used a drop in either engine:D

I'm a believer in the stuff.

Re: Amsoil 15-40W Marine syn oil
 

Amsoil does a nice job formulating their products and I like their 2-cycle oil as well. They make a 60wt Racing Synthetic that is very good in blower engines where gas contamination and "thinning" is an issue. The Series 2000 20W-50 Racing product has found it's way into the crankcase of many racing offshore boats. The 15W-40 Diesel/Marine is good for non-racing and "non-extreme" engine applications and certainly a great choice for diesel marine engines!

The Amsoil SD oil filters are worth getting as they trap and flow better than most.

Their new Marine gear-lube has been performing nicely from what I hear.

Amsoil is a good choice if that is the one you decide on and select the right product for the right application. That goes without saying.

Re: Amsoil 15-40W Marine syn oil
 

Not only is it his personal favorite but this his personal thread.

HydroTwin,
Can you ever post without endorsing your personal favorite?

Re: Amsoil 15-40W Marine syn oil
 

An endorsement is a "promotional statement" usually associated with sales and marketing and making money....I am not promoting the use of ANY oil in that sense.. but giving my opinion which I view to be no lesser or greater than anyone elses on this subject.

But I did edit out my "blurb" in the previous post because I see your point. :D

Fair enough?

..and I do know that many of Bob's guys like Amsoil and I think they have a number of really good products as well. Just match the product to the type of engine and service it will be exposed to and you are good to go.

PS..Amsoil makes a very nice Premium 20W-50 Synthetic V-Twin Motorcycle oil too... :drink:

Re: Amsoil 15-40W Marine syn oil
 

That's fair enough.
Plenty of good lubricants to chose from. I am sure people will find their personal favorite.

Re: Amsoil 15-40W Marine syn oil
 

The Series 3000 5W-30 is said to be one of the best formulations of it's kind. Their 0W-40 ATV oil is great stuff too. Amsoil is rock solid stuff. Nobody I know of on Bob's site has any Amsoil issues and many run it out to long drain cycles in cars.

The Marine Lube is looking real good...I think I said that already... :D

I think the ZDDP levels in their V-Twin formulation are excellent by the way too.

The reason I am willing to make these statements is because Amsoil products are used in high volume on Bob's site...and those guys are diehard oil fanatics.

Re: Amsoil 15-40W Marine syn oil
 

No, this is my thread and I asked Hydro for his opinion. See my opening post.
Sheesh, why can't everybody mind their own business! :evilb:

Hydro, so in a 502 MPI 415 HP appilcation, ~ 300 hrs, that is stock except for Gaffrig air cleaners and soon to be Stainless Marine exhaust, you feel the 15-40 is the way to go, or should I look @ the 20-50. We idle ALOT with all the Manatee Zones and I change my oil ~25-30 hours, so once again, I'm asking you for your opinion, just so everybody is clear! :eek:
Thanks,
Dean

Re: Amsoil 15-40W Marine syn oil
 

Oops, sorry to have commented. But it was my understanding that when you start a thread it was open for ALL to comment. A PM to Hydro would prevented our interference and your annoyance. --- Jer

Re: Amsoil 15-40W Marine syn oil
 

Long-duration idling causes more oil and oil filter deterioration and increases the need for more oil and filter changes no matter which oil you pick.

The choice between 15W-40 Amsoil Marine or Amsoil 20W-50 Severe Service Racing is a tough call as both are real good... while the Racing product would be best if you run hard for long periods.

If the price you can get between the two products is not much different.. go for the 20W-50. If you can get the 15W-40 "cheap" then I see no reason to not use it. Both are really good products.

I thought you were supposed to go WOT in Manatee zones to get up on top of the water to avoid them... :D

Re: Amsoil 15-40W Marine syn oil
 

JP,
I wasn't referring to you in my "mind your own bus." comment. Your 1st post was the kind of info. I was looking for. As for the 2nd post.... :cool:
BTW, I went to school in Geneseo! Man, what a party town! :drink:
Thanks,
Dean

Re: Amsoil 15-40W Marine syn oil
 

I thought you were supposed to go WOT in Manatee zones to get up on top of the water to avoid them... :D[/QUOTE]


HC,
Thanks for your knowledge on oil, and I'm going to see what the $$ delta is between the 15/40 vs 20-50 and go with the best deal!
Love to try out your Manatee Zone theroy, BUT I'm the loudest boat on Sykes creek!! :mad:
Thanks again,
Dean

Re: Amsoil 15-40W Marine syn oil
 

HC,
Thanks for your knowledge on oil, and I'm going to see what the $$ delta is between the 15/40 vs 20-50 and go with the best deal!
Love to try out your Manatee Zone theory, BUT I'm the loudest boat on Sykes creek!! :mad:
Thanks again,
Dean[/QUOTE]

You won't go wrong with either choice the Amsoil 15W-40 is really a great product as it has great detergency and dispersion properties ...so much so you can use it in a diesel engine...and a great base stock....very good anti-wear additives too.

I have used several of Amsoil's products and always had great results. The 15W-40 also has a great anti-corrosion additive system and it offers excellent film strength. If you can get a good price on it don't hesitate.

Amsoil synthetic oils are durable and dependable.

What do you think of the Amsoil 60W racing oil for a big blower motor?

Ive been using the 15/40 Amsoil for a few years now just for the fact of soot and gas thinning in a procharged 502 with close to 300 hours and it has held up great. I dont lose any between 20 hour changes.

Jim

Using Amsoil and Royal Purple
 

I just purchased a boat with 20w50 Race synthetic in the engines (500hp) and 75w90 Marine synthetic gear lube in the drives. I just serviced the engines for the season. The oil pressure idling with the Amsoil was ~40-45 on the engines when up to temp. Due to availability, I have put 50w Royal Purple synthetic in the engines this round to shake down for comparison. I did notice on the hose at idle port engine oil pressure was 50-52 and starboard was ~58psi (approx 8-10 psi higher on each engine). This may be for the fact that they were on the hose and not run under a load. The engines were up to temperature, however. I did chane filters, but the old ones didn't look bad; so, I cannot imagine there was a large deltaP across the old filter.

I will continue using the Amsoil gear lube in the drives. I am told it's bullet-proof...


Comments and questions on what I 've done?

Zack

My wife is a dealer for Amsoil , I use the gear oil in my fountain and before I starting using it I had a friend use it for three years with no problems in the motor and the drive. I use the grease, chain case oil, four stroke in my mowers and tillers and four wheeler and the two stroke in my fishing boat. no problems if any one wants some let me know.

I have been told not to use syn. oil with a roller cam , due to the slick ness of the oil the rollers will slide over the lobes instead of roll. But I am sure there are guys out there that have been using it, and have not had a problem. Use what works best for you. But a big blower motor with out a roller cam go for it.

I had a flat tappet cam in the motor last year and used dino oil because it "didn't" have a roller cam. The flat tappets need to be able to twist as they come up and I was told to stay away from Synthetic in a flat tappet cam but the reverse for a roller cam motor....

Lot's of conflicting information out there.... but almost 99% of all new motors have roller cams, including OEM so I would guess we would be seeing a lot more failures if the roller issue was true... but I'm no scientist or chemist...:drink: