Search results

My dad normally keeps up with the maintenece and gets the oil done at valvoline every 3K or so.. So im guessing they are using the valvoline dino 10w-30. 10w-30 seems to work for him for weight, is this the best dino.. i dont think he wants to go synthetic due to a possible leak that could...

im wondering about tranny coolers and oil coolers... As i understand it the tranny fluid flows all the time throughout the tranny cooler and the oil cooler has a thermostat (duh) but is it an on/off deal or what? Im just planning on running a larger tranny cooler/ aux filter for an auto and an...

After reading of how good the stuff cleans out an engine and seals i figured id try it b/c i have a very slight rear main seal leak. Well i ran it for 512 miles and just changed my filter and oil and i can say that i can tell no difference whatsoever. The oil still looked clean and the slight...

Well my 4.0L jeep is squeeling on me.. Im dumfounded though because its a motor with 9K miles and its 1 year old. It has a flowkooler water pump (new with engine) and a new fan belt was installed as well. I dont get a noise at cold start or even once its at temp. I get the noise after i drive...

Well i got the diesel oil and tractor filter for the jeep 4.0L.... I still have a couple hundred miles left on my auto-rx treatment and then ill swap in the delvac 15w-40 and the new filter. Hoping for a higher warm idle and decrease in the rear main leakage. Sound like a plan? Im guessing this...

Well you read it right.. Im wondering how to get my seals nice and gummed up so they dont leak. I hear more and more about people with high mileage cars that ran dino there entire life and didnt leak a drop but once they dropped an engine cleaner or a synthetic in there they got leaks. I...

vehicle and engine : Jeep with 4.0L six oil choices: maxlife 20w-50 or castrol/delvac 15w-40 reasons for other then 10w-30... slight rear main seal leak and low pressure once engine is hot and at idle. I used 20w-50 last summer and had good pressure. I will be using auto-rx with the last 750...

Well i wanna add on oil cooler to the jeep before it gets hot out. Its a 4.0L in a TJ (newer wrangler). Ive looked on Jegs and carparts and summit but im not sure which adapter i need and what would be the best route to go. Would a sandwich adapter and small cooler work? What size adapter, what...

would this benefit an engine? I know theres superplug at about $30 and you can get the magnetic ones online for $12 or so. Should i invest in a basic magnetic type or not?

Im sure yall have seen my posts regarding the oil for the 4.0L in my jeep. Running 10w-30 in the winter and 20w-50 in the summer gives me good pressures but id like to find something that i can use all year and the 15w-40 has been coming up alot. There are post about clogging up the Cat, hurting...

Well i have one... ive had it for a while now... i did get a "seat of the pants" boost with it so i dont wanna remove it b/c of the performance + a 2mpg increase. It was properly oiled and still looks rather clean (i believe the word on the street is that they work better dirty). Should it stay...

thinking the 40 would be thicker and yield slighly higher oil pressure- correct? also would it be too thick for the cold starts? Ill be replacing the sender but it appears that full hot idle is about 15 and id like a lil higher idle..

I was giving the jeep the look over today and the oil and all other fluids look good but i found something that worries me... I believe i have a slight rear main seal leak... My engine just fell out of warranty and now i have this to contend with... Ive changed a rear main on a 4.0 before but i...

Well in reply to my last post i think it is sensor related b/c i get 41psi on startup and it stays in that range for a while even after its up to temp.. Im thinking that i can add a high volume pump, oil cooler, and replace the rear main and run synthetic? I tried synthetic in the past (M1) and...

Well ive tried mobil 1 in the past, also used fram (when i didnt know better), lately have been using STP S8, the last 2 oil changes have been the STP S8a (the bigger one), I havent noticed oil pressure changes in the various filters but i would like more pressure. Which is the best to use- the...

well first i'd like to say howdy- im a noobie.. My questions stem from my jeep wrangler (97 model year) but with a rebuilt 4.0L that has about 10K miles. I ran synthetic through it for a few thousand miles but it began leaking so i swapped over to dino with no problems. My pressure seems to be...