Oil and Filter switch maybe?
 

Goodwrench 350 Crate Motor
Lunati 204/214 420/442 (448/472 @ 1.6) Hydraulic Cam/Lifters
Edelbrock Double Roller Chain
Comp Cams 1.6 Roller Tip Rockers
Crane Chrome Moly Push Rods
Melling HV55 Oil Pump
World Products S/R Torquer Heads 2.02/1.60 170 cc runners
Modified q-jet
Accell Billetech 60109 Distributor
MSD 6A and 8.8 Wires
Edelbrock Victor Water Pump
Edelbrock Tubular Exhaust
Hi-Flo Cat
Dynomax Cat Back
Hypertech Low Temp Fan Switch
Hypertech Thermomaster Chip
160 Thermostat

So I am currently Running 10w-30 pennzoil and ACDELCO Oversized Filter.
Car seems too run a little funny and has lifter tick on start up, didn't do it till i switched brands.
Wondering if I should use something like rotella T, or sythentic royal purple or something.
Car seems too have a miniscule Rear main seal leak, kinda worried about switching too sythentic because of that.
Any Ideas guys, and just straight forward answers please.

Re: Oil and Filter switch maybe?
 

Put synthetic in the engine. If you have seals leaking, repair the leaks.

Re: Oil and Filter switch maybe?
 

I have been running synthetic Mobil 1 Extended Performance 5w-30 oil with there Extended Performance "long" filter for over 9 years on an engine with 109,166 miles now. Strange thing is that when I bought the car it had the famous smoke on startup for the first 6 months and then disappeared.

Re: Oil and Filter switch maybe?
 

I only use wix filters and on most of my cars I use synthetic Mobil 1 10W30 or 10W40 oil and if engine has a flat tappet cam I dump in a half bottle of lucas TB zinc plus or Break-In Oil AdditiveW/ Zinc with every oil change.

Re: Oil and Filter switch maybe?
 

Which over sized filter are you running? I'd blame the filter before I'd blame the oil.

Re: Oil and Filter switch maybe?
 

im a firm believer in "wix" filters. I also use conventional "Castrol GTX" oil. I find any engine with more than 100,000 miles should be run on 10-40 in the winter and 20-50 in the summer. this makes for a happy engine. I never use 5w30 in anything worth keeping

Re: Oil and Filter switch maybe?
 

i've been using valvoline vr-1 oil for many years. it still has the added ZDDP for hyd cam/lifters. no problems here.

i run an a/c delco filter with no issues, but i have heard many times that wix is top of the line.

Re: Oil and Filter switch maybe?
 

5W-30 is what Mobil 1 recommended so that's what's in there.
I live in wine country and we get some rain in the winter but most of the year its absolutely beautiful . Not to hot or cold so I drive my car all year long. It runs clean and does not burn oil, but if you think I could be hurting the car I'm always willing to learn so what's up with the oil I'm running ?

Re: Oil and Filter switch maybe?
 

How many miles are on the motor? (Talking to OP, not to you Ron)

Re: Oil and Filter switch maybe?
 

Ditch the Delco filters. I lost 2 motors a few yrs ago b4 I figured out they had changed the guts of them.
Wix, napa gold and a few others are still good.

NO MORE AC DELCO, they went to elcheapo guts.

Re: Oil and Filter switch maybe?
 

first ,synthetic oil is in a whole nother league than conventional oils. if you live where the temps don't vary much, and your engine is sound. mobil-1 is a good choice. I live in eastern TN. most if not all the engines I service come to me with between 50,000 and 150,000 miles on them. you cant put synthetic oil in a engine with more than 10,000 miles. it WILL find a way out.

Re: Oil and Filter switch maybe?
 

OK, when I bought my car it had 87,000 miles on it. In the last 9 years I have only put 22,000 on it. The speedo rolled over and its setting at 9,000 (actual 109,000 miles)
My car was a wreck but the engine and wiring were unmolested so I must have gotten lucky because the first thing I did was change all the fluids and filters. Like I said,it smoked on startup but that went away after about 6 month of running the Mobil 1 EP Synthetic. I've really only started to work on cars and this is the only one.
I don't have the experience of some of you and can only speak as to what mines been like.