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Originally Posted By: 71Chevyguy Very important questions here for you. There is a baffle under the oil filler cap. I have seen many many vehicles driving around without it. Not sure if some people take it out to fill the oil? ( no need). On the vehicles that I saw driving around without the...

I have a 2002 Jeep GC 4.7L V8 with 148,000 miles. I changed the oil every 3000 when using dino oil and 5000 if I am using synthetic oil. I do tow a boat on the weekends. I am adding about 2 quarts of oil in between 3000 oil changes. 5w-30. The PCV has been changed, the compression is good, no...

Originally Posted By: Thax Andy on the 4.7L there are two crankcase breathers , one per cylinder head. These are on the very back of the motor towards the firewall , the can be screwed out and cleaned with carb cleaner. I did this recently on my 4.7L and it has reduced consumption very...

I was reading on some forums that using a larger oil filter (If it fits) is a good thing to do. The pros are more filtration, more oil capacity. Is this true? What are the con's? Andy

Originally Posted By: chubbs1 I would not do it before winter. Are you going to be towing boats this winter? Try a HM 5w30 or 10w30 like MaxLife NextGen, or whatever HM you prefer. Give it a couple of tries. If there are no changes by the time it starts warming up try a 10w40. Actually I just...

Originally Posted By: Donald And you are sure its burning it? I would not change grade or add anything. Are there any other crankcase breathers besides the PCV? You are on the upper end of normal. How heavy a boat? Is this once and awhile or all the time for towing? Donald, I am assuming the...

2002 Jeep Grand Cherokee 4.7 L with 146k miles. I am using the recommended 5w-30 oil. I have to add about 2 qts of oil during my 3000 mile oil changes. I changed the PCV. There are no leaks. The engine runs very smoothy. I do tow a boat with it. What can I do to reduce the oil consumption...

Originally Posted By: Bluestream Stay with the Yamalube. how many hours are you running per year?RP will not increase hp. 80-100 A year. What about using synthetic in the lower unit?

I am presently using 10w-30 Yamalube in my outboard. I am considering switching to Royal Purple 10w-30 and 75W-90 Royal Purple for the Lower Unit. My goal is to increase the HP a little while reducing wear and tear on the engine. I am to follow the manual and change the oil each season or after...

I have a 1978 35hp Johnson Outboard, that just came back from being serviced. What 2 cycle oil should I use? (TD30?TD50?TCW3?,etc) What grade gas? Thanks, Andy

Originally Posted By: mdocod Considering use and application, also that the original owner kept that OCI probably unnecessarily short, means you should have a nice clean slate to work from. Continued use of a syn-blend 5w30 would probably be perfectly fine year round if you were going to...

Originally Posted By: 47HO I wonder why the dealer used 5W-20, when a 5W-30 is spec'd? My error it is 5w-30. I checked the oil with about 2500 miles on that batch, and it is very clean as well as the filler cap. No goo or anything like that. Andy

I believed the dealer used Kendal Syn blend 5w-20. On the oil fill cap it also says Kendal Syn Blend. Driving Style = Moslty suburban driving to and from work. No lead foot. Climate: North East, four seasons. Winter can vary, lows are around 10 degrees f. Summers highs 90f. Towing: Will be...

The engine is a V8 4.7. Runs well, no burning oil. The oil was changed every 3k by the original owner. I was lucky enough to get all the service records from the dealer. Andy

I bought a used Jeep GC, it now has a 117k miles. I am going to start running syn oil through it. I am undecided as what oil to use. I am thinking of using royal purple or Mobil 1. Any thoughts? Andy