Switching to synthetic at 80,000?

[Bacovish]

But a 2009 tahie with 80,000 miles and don't know the maintenance history of the the vehicle. Thought about switching to mobile1 synthetic but heard that might be a bad idea since it wasn't used from day 1. Any thoughts. Thanks

 

[drakon543]

Switch to a synthetic blend for atleast 2 oil changes before you switch to full synthetic. If your referring to the rumor that going from regular to full synthetic or the other way around can gum up a motor or cause oil leaks. Ive never had either situation happen to my nor do i know anyone that its happened to. However even still if your concerned about it just do a synthetic blend first like i suggested.

 

[Bacovish]

Sorry I wasn't little more clear but yes. People say it will cause oil leaks etc....all I know is my dad has 340,000 on his hoe but he used it from day 1. I was actually thinking the same thing. Might do a blend for a couple of changes. Thanks.

 

[iLikeEggs]

Got my hard-lived SSV with 124k. Switched to Mobil 1 immediately. Only thing better would be Amsoil or Royal Purple. I've used Mobil 1 on every vehicle I've owned. For me it's kind of a comfort thing now. To each his own though. Nothing wrong with non synthetics these days either, just change them more frequently and make sure it meets the specs for your vehicle. The lowest priced off the shelf no name bulk brand today is far superior to the best non synthetic of ten or fifteen years ago.

 

[drakon543]

I switched to using castrol synthetic blend a number of years ago. It's the only oil i use anymore. I used to use whatever oil was cheap at the local parts store until one of the older guys at the shop i worked at convinced me to take one of my valve covers off. Never again will a lesser oil touch my engines.

 

[drakon543]

I switched to using castrol synthetic blend a number of years ago. It's the only oil i use anymore. I used to use whatever oil was cheap at the local parts store until one of the older guys at the shop i worked at convinced me to take one of my valve covers off. Never again will a lesser oil touch my engines.

 

[iLikeEggs]

Lol how true. That conjures up memories. We used to do the same thing. We could always identify the customers that were loyal to (the old) Quaker State oil. We pull a valve cover and show them the sludge build up and then they would switch over to Pennzoil and their bright yell bottles.

 

[Bacovish]

Went ahead last week and made the switch to mobile 1 full synthetic and noticed right away a huge difference. Before on start up the engine had a little noise for few seconds. After it was warm some ticking was present no matter how much I drove it. Not bad and completely normal from my understanding. After the switch even while it sits during the week because I ha e a company vehicle on startup no noise at all. Even the slight tick is gone. Engine sounds so much better. Didnt really think I would notice a difference but I am extremely happy with the switch. Thanks for all the advice.

 

[Slow5.0]

I tried switch to full synthetic around 80k and it was using 1qt every 2k. With hi milage regular oil dont need add any oil till oil change at 5k

 

[byrds6]

I bought my 07 with 91K on the clock and changed it to Pennzoil Plat. I have not had an issue so far. It does have some oil loss between oil changes though but from what Ive read its pretty common. Granted I run it til the oil life monitor gets to about 20% too. So I wind up putting about a quart in it. I did install a catch can and it does keep some out of the intake but its not the amount thats lost. Not sure where that is going since it doesnt leak.