Debating over synthetic or traditional oil. Been using Rotella 15-40 and chaning about every 7.5k. Is there aqny benefit to using synthetic and if so what is a good sythetic oil that can hold up to these power houses we call cummins?

 

how many miles are on your truck?

brett

 

28k for got to ask about oil filters. What is a good one that gives filteration with out restriction?

 

I use Mobile Delvec synthetic. I'm firm believer in Syn. oils, tranny fluids, ext. I've used then in every vehical I have. My wife car has 90k on it and after 5000 miles oils still transparent. I've never sent in an oil sample to have tested after it use's but I know sevrals guys on here have.

 

You cant beat a synethic oil! I perfer the Amsoil HDD 5w-30 with a fleet gaurd filter. Never had any issues!!

 

fleetguard stratopore p/n LF 16035

 

My vote has to go for Amsoil 5w30 HDD oil and Fleetguard Stratopore filter being that is what I use it in my truck

 

I'm a royal purple man myself, but Amsoil is very proven. I just don't have the best access to it, and I get the purple for cheap. But I have used rotella and delo also before and I have noticed it loses its viscosity a little sooner than royal purple and I run it for 12000 miles with a wix filter (napa # 6240) If you intend on longer intervals or drive constantly, go synthetic, you wont regret it.

 

fixing to change the fluids to all Amsoil synthetics myself with an amsoil filter. Heard great things about there products.

k.hood

 

I just bought a bunch of AMSOIL stuff and will soon be putting it in. I will say, that my old 1994 Honda Civic (which I passed on to sister in-law about 4 years ago), got an oil change probably at an average of 7000-10000 miles, and it just turned over 210,000 miles and still running like a champ. I know a Honda 4 bange and CTD is different animal...but don't rule out dino oil.

Oh, I went 15W40 Amsoil. Is that OK?

 

Here is a vote for Schaeffer Specialized Lubricants...
Supreme 7000 15/40
Compared to RP, Redline, and Amsoil but cost much much less....

Oilguy

 

Fleetguard filter 5/40 duron full synthetic in summer and 0/40 duron full synthetic in the winter.

 

First off, I use some amsoil products but don't beleive all the hype. Five years ago, I took the hook and soon found out all of their products are not what they advertise. I do still use some of their products though, just be careful and realistic.

 

I just bought my truck last week and it has 63k on it. Is it too late to start with synthetic? Should I just stick with delo 15-40?

 

its not to late to switch to synth. the motor is good and broke in now

brett