Jmac

I just spoke to a local Amsoil representative who told me that with the bypass system in place you can run for 100,000+ miles without changing the oil, just the filters. He said they (Amsoil) had recently ran a test with a big rig that did this for 400,000+ miles, amsoil paid to have motor broken down and there was negligible wear on the motor.

Is all this hot air or is it really worth it to get the bypass system?
If true it seems worth it.

Jamie

Lightman

Several people with ctd's have run more than 100k on the same run of oil. As the filters are changed, they are filled with new oil, which replenishes the additives. Determining the filter change interval is done by oil analysis. You will get a variety of opinions on whether or not they are worth it or not. Some will say the engine will outlast the truck no matter what you run it on. Some like to go above and beyond 'basic' maintenance or basic products. I like my amsoil bypass system.

Jmac

OK so it sounds cost effective also, unless the filters are $50+ each!!

Thanks lightman

PS how often do you change your oil?

Jamie

SuperGewl

As others have said, you will get various opinions on it and each has their pros and cons.
If you ask those of us that have them we love and think it's worth the money to invest in our trucks for duribility.
Yes you can go longer periods of time as long as you follow what AMSOIL tells you to do and get oil analysis every six months ond/or 7.5k miles. At that time you change the oil filter and maybe the Bypass filter every other filter change or when they tell you to.
You also need to buy the AMSOIL drop in air filter, I would buy 2 becasue it is easier to let the one dry while you put the clean one in.
I love mine system it's the only way to go.

Lightman

Jmac the filters aren't too expensive, the full flow is like $12 maybe and the bypass is $25. I tested at 7500 but the oil was still brand new, so this time I have gone 10,000 miles on the full flow filter before changing it and took a sample. I should have results soon. So far my plan has been to change the full flow every 10k miles and the bypass every 20k. We will see how good of a plan that is after I get results back, and try to determine a full drain interval. Just for the heck of it, I'll probably change the oil every 40k.

Jmac

Lightman, do you run the 5w30 or 15w40 in yours. also where is your remote bypass system hooked up?

thanks jamie

SuperGewl

Jmac if you want to see some pics look at my members pics.
Most of us run 15w 40

Lightman

I run Mobil Delvac 1 5w40 oil. IMO a 30 weight is too thin for as hard as our engines work and as hot as they get. 15w40 is great for southern climates but below 10F they really start to thicken compared to a 5w. I used to say that if I lived in the south I'd run Amsoil HDD 15w40 because it's a great group 4 oil at the price, however now that Delvac 1 has gotten cheaper(it's now sold in walmarts and auto stores as mobil 1 truck and suv), I'd probably stick to the d1.

As a small possibly irrelevant sidenote - d1 is CI-4 certified, not 'rated' like the amsoil , and should any dealer issue come up, at least the d1 is an approved oil.

My system is 'hooked up' with a billet oil filter adapter from TDR member CPFF , and the hoses run to a mount that's attached to the block. I highly recommend getting one of these adapters, it's worlds better than the amsoil supplied one. You can mount the system anywhere you like, provided it's a sturdy/solid area. Flimsy mount locations have been known to make an annoying hum.